diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse2/SmallRef.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse2/SmallRef.tsx
index 40555a00f690..6f7075514acb 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse2/SmallRef.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse2/SmallRef.tsx
@@ -13,6 +13,7 @@ import {Icon, IconName, IconNames} from '../../../Icon';
 import {useWeaveflowRouteContext} from '../Browse3/context';
 import {Link} from '../Browse3/pages/common/Links';
 import {useWFHooks} from '../Browse3/pages/wfReactInterface/context';
+import {isObjDeleteError} from '../Browse3/pages/wfReactInterface/utilities';
 import {
   ObjectVersionKey,
   OpVersionKey,
@@ -125,6 +126,11 @@ export const SmallRef: FC<{
   }
   const objectVersion = useObjectVersion(objVersionKey);
   const opVersion = useOpVersion(opVersionKey);
+
+  const isDeleted =
+    isObjDeleteError(objectVersion?.error) ||
+    isObjDeleteError(opVersion?.error);
+
   const versionIndex =
     objectVersion.result?.versionIndex ?? opVersion.result?.versionIndex;
 
@@ -177,13 +183,14 @@ export const SmallRef: FC<{
             overflow: 'hidden',
             whiteSpace: 'nowrap',
             textOverflow: 'ellipsis',
+            textDecoration: isDeleted ? 'line-through' : 'none',
           }}>
           {label}
         </Box>
       )}
     </Box>
   );
-  if (refTypeQuery.loading) {
+  if (refTypeQuery.loading || isDeleted) {
     return Item;
   }
   if (!isArtifactRef && !isWeaveObjRef) {
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/datasets/DatasetVersionPage.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/datasets/DatasetVersionPage.tsx
index f3aed14e9efd..1fd637d20d44 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/datasets/DatasetVersionPage.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/datasets/DatasetVersionPage.tsx
@@ -13,6 +13,7 @@ import {
   ScrollableTabContent,
   SimplePageLayoutWithHeader,
 } from '../pages/common/SimplePageLayout';
+import {DeleteObjectButtonWithModal} from '../pages/ObjectVersionPage';
 import {TabUseDataset} from '../pages/TabUseDataset';
 import {useWFHooks} from '../pages/wfReactInterface/context';
 import {objectVersionKeyToRefUri} from '../pages/wfReactInterface/utilities';
@@ -21,7 +22,8 @@ import {CustomWeaveTypeProjectContext} from '../typeViews/CustomWeaveTypeDispatc
 
 export const DatasetVersionPage: React.FC<{
   objectVersion: ObjectVersionSchema;
-}> = ({objectVersion}) => {
+  showDeleteButton?: boolean;
+}> = ({objectVersion, showDeleteButton}) => {
   const {useRootObjectVersions, useRefsData} = useWFHooks();
   const entityName = objectVersion.entity;
   const projectName = objectVersion.project;
@@ -73,7 +75,7 @@ export const DatasetVersionPage: React.FC<{
       }
       headerContent={
         <Tailwind>
-          <div className="grid w-full auto-cols-max grid-flow-col gap-[16px] text-[14px]">
+          <div className="grid w-full grid-flow-col grid-cols-[auto_auto_1fr] gap-[16px] text-[14px]">
             <div className="block">
               <p className="text-moon-500">Name</p>
               <ObjectVersionsLink
@@ -106,6 +108,11 @@ export const DatasetVersionPage: React.FC<{
               <p className="text-moon-500">Version</p>
               <p>{objectVersionIndex}</p>
             </div>
+            {showDeleteButton && (
+              <div className="ml-auto mr-0">
+                <DeleteObjectButtonWithModal objVersionSchema={objectVersion} />
+              </div>
+            )}
           </div>
         </Tailwind>
       }
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CallPage/ObjectViewer.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CallPage/ObjectViewer.tsx
index 592ae3eaede7..0bc3bae2e7e4 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CallPage/ObjectViewer.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CallPage/ObjectViewer.tsx
@@ -7,6 +7,7 @@ import {
   GridRowId,
 } from '@mui/x-data-grid-pro';
 import {Button} from '@wandb/weave/components/Button';
+import {parseRef} from '@wandb/weave/react';
 import _ from 'lodash';
 import React, {
   Dispatch,
@@ -21,6 +22,7 @@ import React, {
 import {parseRefMaybe} from '../../../../../../react';
 import {LoadingDots} from '../../../../../LoadingDots';
 import {Browse2OpDefCode} from '../../../Browse2/Browse2OpDefCode';
+import {objectRefDisplayName} from '../../../Browse2/SmallRef';
 import {isWeaveRef} from '../../filters/common';
 import {StyledDataGrid} from '../../StyledDataGrid';
 import {
@@ -161,10 +163,15 @@ export const ObjectViewer = ({
 
     const refValues: RefValues = {};
     for (const [r, v] of _.zip(refs, resolvedRefData)) {
-      if (!r || !v) {
+      if (!r) {
         // Shouldn't be possible
         continue;
       }
+      if (!v) {
+        // Value for ref not found, must be deleted
+        refValues[r] = deletedRefValuePlaceholder(r);
+        continue;
+      }
       let val = r;
       if (v == null) {
         console.error('Error resolving ref', r);
@@ -725,3 +732,18 @@ const useTruncatedData = (data: Data) => {
 
   return {truncatedData, truncatedStore, setTruncatedData, setTruncatedStore};
 };
+
+// Placeholder value for deleted refs
+const DELETED_REF_KEY = '_weave_deleted_ref';
+const deletedRefValuePlaceholder = (
+  ref: string
+): {[DELETED_REF_KEY]: string} => {
+  const parsedRef = parseRef(ref);
+  const refString = objectRefDisplayName(parsedRef).label;
+  return {[DELETED_REF_KEY]: refString};
+};
+export const maybeGetDeletedRefValuePlaceholderFromRow = (
+  row: any
+): string | undefined => {
+  return row.value?.[DELETED_REF_KEY];
+};
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CallPage/ObjectViewerGroupingCell.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CallPage/ObjectViewerGroupingCell.tsx
index 0681e9845271..a06ce048d6e9 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CallPage/ObjectViewerGroupingCell.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CallPage/ObjectViewerGroupingCell.tsx
@@ -6,6 +6,7 @@ import React, {FC, MouseEvent} from 'react';
 import {Button} from '../../../../../Button';
 import {Tooltip} from '../../../../../Tooltip';
 import {CursorBox} from './CursorBox';
+import {maybeGetDeletedRefValuePlaceholderFromRow} from './ObjectViewer';
 
 const INSET_SPACING = 40;
 
@@ -32,7 +33,9 @@ export const ObjectViewerGroupingCell: FC<
     event.stopPropagation();
   };
 
+  const deletedRef = maybeGetDeletedRefValuePlaceholderFromRow(row);
   const tooltipContent = row.path.toString();
+  const textContent = deletedRef ?? props.value;
   const box = (
     <CursorBox
       $isClickable={isGroup || isExpandableRef}
@@ -109,8 +112,9 @@ export const ObjectViewerGroupingCell: FC<
               textOverflow: 'ellipsis',
               whiteSpace: 'nowrap',
               flex: '1 1 auto',
+              textDecoration: deletedRef ? 'line-through' : 'none',
             }}>
-            {props.value}
+            {textContent}
           </Box>
         }
       />
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/ecpTypes.ts b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/ecpTypes.ts
index df40b28a92df..a0f0eafc9b3e 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/ecpTypes.ts
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/ecpTypes.ts
@@ -25,7 +25,7 @@ export type EvaluationComparisonSummary = {
 
   // Models are the Weave Objects used to define the model logic and properties.
   models: {
-    [modelRef: string]: ModelObj;
+    [modelRef: string]: ModelObj | null;
   };
 
   // ScoreMetrics define the metrics that are associated on each individual prediction
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/sections/ComparisonDefinitionSection/EvaluationDefinition.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/sections/ComparisonDefinitionSection/EvaluationDefinition.tsx
index 0de9421ba1a9..05cce3904519 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/sections/ComparisonDefinitionSection/EvaluationDefinition.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/sections/ComparisonDefinitionSection/EvaluationDefinition.tsx
@@ -1,4 +1,4 @@
-import {Box} from '@material-ui/core';
+import {Box} from '@mui/material';
 import React, {useMemo} from 'react';
 
 import {
@@ -9,9 +9,10 @@ import {
 import {hexToRGB} from '../../../../../../../../common/css/utils';
 import {parseRef, WeaveObjectRef} from '../../../../../../../../react';
 import {Icon, IconNames} from '../../../../../../../Icon';
-import {SmallRef} from '../../../../../Browse2/SmallRef';
+import {objectRefDisplayName, SmallRef} from '../../../../../Browse2/SmallRef';
 import {CallLink, ObjectVersionLink} from '../../../common/Links';
 import {useWFHooks} from '../../../wfReactInterface/context';
+import {isObjDeleteError} from '../../../wfReactInterface/utilities';
 import {ObjectVersionKey} from '../../../wfReactInterface/wfDataModelHooksInterface';
 import {EvaluationComparisonState} from '../../ecpState';
 
@@ -43,11 +44,10 @@ export const EvaluationModelLink: React.FC<{
 }> = props => {
   const {useObjectVersion} = useWFHooks();
   const evaluationCall = props.state.summary.evaluationCalls[props.callId];
-  const modelObj = props.state.summary.models[evaluationCall.modelRef];
-  const objRef = useMemo(
-    () => parseRef(modelObj.ref) as WeaveObjectRef,
-    [modelObj.ref]
-  );
+  const objRef = useMemo(() => {
+    return parseRef(evaluationCall.modelRef) as WeaveObjectRef;
+  }, [evaluationCall.modelRef]);
+
   const objVersionKey = useMemo(() => {
     return {
       scheme: 'weave',
@@ -69,10 +69,31 @@ export const EvaluationModelLink: React.FC<{
   ]);
   const objectVersion = useObjectVersion(objVersionKey);
 
+  if (isObjDeleteError(objectVersion.error)) {
+    return (
+      <Box
+        sx={{
+          height: '22px',
+          flex: 1,
+          minWidth: 0,
+          overflow: 'hidden',
+          whiteSpace: 'nowrap',
+          textOverflow: 'ellipsis',
+          fontWeight: 500,
+          textDecoration: 'line-through',
+        }}>
+        <Box display="flex" alignItems="center">
+          <ModelIcon />
+          {objectRefDisplayName(objRef).label}
+        </Box>
+      </Box>
+    );
+  }
+
   return (
     <ObjectVersionLink
-      entityName={modelObj.entity}
-      projectName={modelObj.project}
+      entityName={objRef.entityName}
+      projectName={objRef.projectName}
       objectName={objRef.artifactName}
       version={objRef.artifactVersion}
       versionIndex={objectVersion.result?.versionIndex ?? 0}
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/sections/ScorecardSection/ScorecardSection.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/sections/ScorecardSection/ScorecardSection.tsx
index 0892a4ca7db9..fb1e4e2dde71 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/sections/ScorecardSection/ScorecardSection.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/CompareEvaluationsPage/sections/ScorecardSection/ScorecardSection.tsx
@@ -90,11 +90,11 @@ export const ScorecardSection: React.FC<{
     const propsRes: {[prop: string]: {[ref: string]: any}} = {};
     modelRefs.forEach(ref => {
       const model = props.state.summary.models[ref];
-      Object.keys(model.properties).forEach(prop => {
+      Object.keys(model?.properties ?? {}).forEach(prop => {
         if (!propsRes[prop]) {
           propsRes[prop] = {};
         }
-        propsRes[prop][ref] = model.properties[prop];
+        propsRes[prop][ref] = model?.properties?.[prop];
       });
     });
 
@@ -104,7 +104,7 @@ export const ScorecardSection: React.FC<{
       if (!propsRes.predict) {
         propsRes.predict = {};
       }
-      propsRes.predict[ref] = model.predictOpRef;
+      propsRes.predict[ref] = model?.predictOpRef;
     });
 
     return propsRes;
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/ObjectVersionPage.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/ObjectVersionPage.tsx
index 1b0bb491f1c0..d1a2543a63bc 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/ObjectVersionPage.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/ObjectVersionPage.tsx
@@ -1,18 +1,21 @@
 import Box from '@mui/material/Box';
+import {Button} from '@wandb/weave/components/Button';
 import {useObjectViewEvent} from '@wandb/weave/integrations/analytics/useViewEvents';
-import React, {useMemo} from 'react';
+import React, {useMemo, useState} from 'react';
 
 import {maybePluralizeWord} from '../../../../../core/util/string';
 import {Icon, IconName} from '../../../../Icon';
 import {LoadingDots} from '../../../../LoadingDots';
 import {Tailwind} from '../../../../Tailwind';
 import {Tooltip} from '../../../../Tooltip';
+import {useClosePeek} from '../context';
 import {DatasetVersionPage} from '../datasets/DatasetVersionPage';
 import {NotFoundPanel} from '../NotFoundPanel';
 import {CustomWeaveTypeProjectContext} from '../typeViews/CustomWeaveTypeDispatcher';
 import {WeaveCHTableSourceRefContext} from './CallPage/DataTableView';
 import {ObjectViewerSection} from './CallPage/ObjectViewerSection';
 import {WFHighLevelCallFilter} from './CallsPage/callsTableFilter';
+import {DeleteModal, useShowDeleteButton} from './common/DeleteModal';
 import {
   CallLink,
   CallsLink,
@@ -34,6 +37,7 @@ import {TabUsePrompt} from './TabUsePrompt';
 import {KNOWN_BASE_OBJECT_CLASSES} from './wfReactInterface/constants';
 import {useWFHooks} from './wfReactInterface/context';
 import {
+  isObjDeleteError,
   objectVersionKeyToRefUri,
   refUriToOpVersionKey,
 } from './wfReactInterface/utilities';
@@ -94,7 +98,10 @@ export const ObjectVersionPage: React.FC<{
     path: props.filePath,
     refExtra: props.refExtra,
   });
-  if (objectVersion.loading) {
+  if (isObjDeleteError(objectVersion.error)) {
+    const deletedAtMessage = objectVersion.error?.message ?? 'Object deleted';
+    return <NotFoundPanel title={deletedAtMessage} />;
+  } else if (objectVersion.loading) {
     return <CenteredAnimatedLoader />;
   } else if (objectVersion.result == null) {
     return <NotFoundPanel title="Object not found" />;
@@ -176,6 +183,8 @@ const ObjectVersionPageInner: React.FC<{
     return data.result?.[0] ?? {};
   }, [data.loading, data.result]);
 
+  const showDeleteButton = useShowDeleteButton();
+
   const viewerDataAsObject = useMemo(() => {
     const dataIsPrimitive =
       typeof viewerData !== 'object' ||
@@ -199,7 +208,12 @@ const ObjectVersionPageInner: React.FC<{
   }
 
   if (isDataset) {
-    return <DatasetVersionPage objectVersion={objectVersion} />;
+    return (
+      <DatasetVersionPage
+        objectVersion={objectVersion}
+        showDeleteButton={showDeleteButton}
+      />
+    );
   }
 
   return (
@@ -216,7 +230,7 @@ const ObjectVersionPageInner: React.FC<{
       }
       headerContent={
         <Tailwind>
-          <div className="grid w-full auto-cols-max grid-flow-col gap-[16px] text-[14px]">
+          <div className="grid w-full grid-flow-col grid-cols-[auto_auto_1fr] gap-[16px] text-[14px]">
             <div className="block">
               <p className="text-moon-500">Name</p>
               <div className="flex items-center">
@@ -257,6 +271,11 @@ const ObjectVersionPageInner: React.FC<{
                 <p>{refExtra}</p>
               </div>
             )}
+            {showDeleteButton && (
+              <div className="ml-auto">
+                <DeleteObjectButtonWithModal objVersionSchema={objectVersion} />
+              </div>
+            )}
           </div>
         </Tailwind>
       }
@@ -623,3 +642,41 @@ const OpVersionCallsLink: React.FC<{
     </>
   );
 };
+
+export const DeleteObjectButtonWithModal: React.FC<{
+  objVersionSchema: ObjectVersionSchema;
+  overrideDisplayStr?: string;
+}> = ({objVersionSchema, overrideDisplayStr}) => {
+  const {useObjectDeleteFunc} = useWFHooks();
+  const closePeek = useClosePeek();
+  const {objectVersionsDelete} = useObjectDeleteFunc();
+  const [deleteModalOpen, setDeleteModalOpen] = useState(false);
+
+  const deleteStr =
+    overrideDisplayStr ??
+    `${objVersionSchema.objectId}:v${objVersionSchema.versionIndex}`;
+
+  return (
+    <>
+      <Button
+        icon="delete"
+        variant="ghost"
+        onClick={() => setDeleteModalOpen(true)}
+      />
+      <DeleteModal
+        open={deleteModalOpen}
+        onClose={() => setDeleteModalOpen(false)}
+        deleteTitleStr={deleteStr}
+        onDelete={() =>
+          objectVersionsDelete(
+            objVersionSchema.entity,
+            objVersionSchema.project,
+            objVersionSchema.objectId,
+            [objVersionSchema.versionHash]
+          )
+        }
+        onSuccess={closePeek}
+      />
+    </>
+  );
+};
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/ObjectVersionsPage.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/ObjectVersionsPage.tsx
index 619cf7763fff..e9fee11f3e27 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/ObjectVersionsPage.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/ObjectVersionsPage.tsx
@@ -15,7 +15,10 @@ import {
   GridRowSelectionModel,
   GridRowsProp,
 } from '@mui/x-data-grid-pro';
+import {useViewerInfo} from '@wandb/weave/common/hooks/useViewerInfo';
 import {Checkbox} from '@wandb/weave/components/Checkbox';
+import {Tailwind} from '@wandb/weave/components/Tailwind';
+import {maybePluralizeWord} from '@wandb/weave/core/util/string';
 import _ from 'lodash';
 import React, {useEffect, useMemo, useState} from 'react';
 import {useHistory} from 'react-router-dom';
@@ -32,6 +35,7 @@ import {
 } from '../context';
 import {StyledDataGrid} from '../StyledDataGrid';
 import {basicField} from './common/DataTable';
+import {DeleteModal} from './common/DeleteModal';
 import {Empty} from './common/Empty';
 import {
   EMPTY_PROPS_ACTION_SPECS,
@@ -83,6 +87,7 @@ export const ObjectVersionsPage: React.FC<{
   onFilterUpdate?: (filter: WFHighLevelObjectVersionFilter) => void;
 }> = props => {
   const history = useHistory();
+  const {loading: loadingUserInfo, userInfo} = useViewerInfo();
   const router = useWeaveflowCurrentRouteContext();
   const [filter, setFilter] = useControllableState(
     props.initialFilter ?? {},
@@ -103,21 +108,33 @@ export const ObjectVersionsPage: React.FC<{
     return 'All Objects';
   }, [filter.objectName, filter.baseObjectClass]);
 
-  const hasComparison = filter.objectName != null;
-  const headerExtra = hasComparison ? (
-    <Button
-      className="mr-16"
-      disabled={selectedVersions.length < 2}
-      onClick={onCompare}>
-      Compare
-    </Button>
-  ) : undefined;
+  if (loadingUserInfo) {
+    return <Loading />;
+  }
+
+  const filteredOnObject = filter.objectName != null;
+  const hasComparison = filteredOnObject;
+  const viewer = userInfo ? userInfo.id : null;
+  const isReadonly = !viewer || !userInfo?.teams.includes(props.entity);
+  const isAdmin = userInfo?.admin;
+  const showDeleteButton = filteredOnObject && !isReadonly && isAdmin;
 
   return (
     <SimplePageLayout
       title={title}
       hideTabsIfSingle
-      headerExtra={headerExtra}
+      headerExtra={
+        <ObjectVersionsPageHeaderExtra
+          entity={entity}
+          project={project}
+          objectName={filter.objectName ?? null}
+          selectedVersions={selectedVersions}
+          setSelectedVersions={setSelectedVersions}
+          showDeleteButton={showDeleteButton}
+          showCompareButton={hasComparison}
+          onCompare={onCompare}
+        />
+      }
       tabs={[
         {
           label: '',
@@ -138,6 +155,51 @@ export const ObjectVersionsPage: React.FC<{
   );
 };
 
+const ObjectVersionsPageHeaderExtra: React.FC<{
+  entity: string;
+  project: string;
+  objectName: string | null;
+  selectedVersions: string[];
+  setSelectedVersions: (selected: string[]) => void;
+  showDeleteButton?: boolean;
+  showCompareButton?: boolean;
+  onCompare: () => void;
+}> = ({
+  entity,
+  project,
+  objectName,
+  selectedVersions,
+  setSelectedVersions,
+  showDeleteButton,
+  showCompareButton,
+  onCompare,
+}) => {
+  const compareButton = showCompareButton ? (
+    <Button disabled={selectedVersions.length < 2} onClick={onCompare}>
+      Compare
+    </Button>
+  ) : undefined;
+  const deleteButton = showDeleteButton ? (
+    <DeleteObjectVersionsButtonWithModal
+      entity={entity}
+      project={project}
+      objectName={objectName ?? ''}
+      objectVersions={selectedVersions}
+      disabled={selectedVersions.length === 0 || !objectName}
+      onSuccess={() => setSelectedVersions([])}
+    />
+  ) : undefined;
+
+  return (
+    <Tailwind>
+      <div className="mr-16 flex gap-8">
+        {compareButton}
+        {deleteButton}
+      </div>
+    </Tailwind>
+  );
+};
+
 export type WFHighLevelObjectVersionFilter = {
   objectName?: string | null;
   baseObjectClass?: KnownBaseObjectClassType | null;
@@ -568,3 +630,42 @@ const PeerVersionsLink: React.FC<{obj: ObjectVersionSchema}> = props => {
     />
   );
 };
+
+const DeleteObjectVersionsButtonWithModal: React.FC<{
+  entity: string;
+  project: string;
+  objectName: string;
+  objectVersions: string[];
+  disabled?: boolean;
+  onSuccess: () => void;
+}> = ({entity, project, objectName, objectVersions, disabled, onSuccess}) => {
+  const {useObjectDeleteFunc} = useWFHooks();
+  const {objectVersionsDelete} = useObjectDeleteFunc();
+  const [deleteModalOpen, setDeleteModalOpen] = useState(false);
+
+  const numObjects = objectVersions.length;
+  const versionsStr = maybePluralizeWord(numObjects, 'version', 's');
+  const objectDigests = objectVersions.map(v => v.split(':')[1]);
+  const deleteTitleStr = `${numObjects} ${objectName} ${versionsStr}`;
+
+  return (
+    <>
+      <Button
+        icon="delete"
+        variant="ghost"
+        onClick={() => setDeleteModalOpen(true)}
+        disabled={disabled}
+      />
+      <DeleteModal
+        open={deleteModalOpen}
+        onClose={() => setDeleteModalOpen(false)}
+        deleteTitleStr={deleteTitleStr}
+        deleteBodyStrs={objectVersions}
+        onDelete={() =>
+          objectVersionsDelete(entity, project, objectName, objectDigests)
+        }
+        onSuccess={onSuccess}
+      />
+    </>
+  );
+};
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/OpVersionPage.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/OpVersionPage.tsx
index 36f4e44afc5d..6148e5a5bc48 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/OpVersionPage.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/OpVersionPage.tsx
@@ -1,10 +1,13 @@
-import React, {useMemo} from 'react';
+import {Button} from '@wandb/weave/components/Button';
+import React, {useMemo, useState} from 'react';
 
 import {Icon} from '../../../../Icon';
 import {LoadingDots} from '../../../../LoadingDots';
 import {Tailwind} from '../../../../Tailwind';
+import {useClosePeek} from '../context';
 import {NotFoundPanel} from '../NotFoundPanel';
 import {OpCodeViewer} from '../OpCodeViewer';
+import {DeleteModal, useShowDeleteButton} from './common/DeleteModal';
 import {
   CallsLink,
   opNiceName,
@@ -70,13 +73,14 @@ const OpVersionPageInner: React.FC<{
     // that data available yet.
     return true;
   }, []);
+  const showDeleteButton = useShowDeleteButton();
 
   return (
     <SimplePageLayoutWithHeader
       title={opVersionText(opId, versionIndex)}
       headerContent={
         <Tailwind>
-          <div className="grid w-full auto-cols-max grid-flow-col gap-[16px] text-[14px]">
+          <div className="grid w-full grid-flow-col grid-cols-[auto_auto_1fr] gap-[16px] text-[14px]">
             <div className="block">
               <p className="text-moon-500">Name</p>
               <div className="flex items-center">
@@ -138,6 +142,11 @@ const OpVersionPageInner: React.FC<{
                 <p>-</p>
               )}
             </div>
+            {showDeleteButton && (
+              <div className="ml-auto">
+                <DeleteOpButtonWithModal opVersionSchema={opVersion} />
+              </div>
+            )}
           </div>
         </Tailwind>
       }
@@ -172,3 +181,41 @@ const OpVersionPageInner: React.FC<{
     />
   );
 };
+
+const DeleteOpButtonWithModal: React.FC<{
+  opVersionSchema: OpVersionSchema;
+  overrideDisplayStr?: string;
+}> = ({opVersionSchema, overrideDisplayStr}) => {
+  const {useObjectDeleteFunc} = useWFHooks();
+  const closePeek = useClosePeek();
+  const {opVersionsDelete} = useObjectDeleteFunc();
+  const [deleteModalOpen, setDeleteModalOpen] = useState(false);
+
+  const deleteStr =
+    overrideDisplayStr ??
+    `${opVersionSchema.opId}:v${opVersionSchema.versionIndex}`;
+
+  return (
+    <>
+      <Button
+        icon="delete"
+        variant="ghost"
+        onClick={() => setDeleteModalOpen(true)}
+      />
+      <DeleteModal
+        open={deleteModalOpen}
+        onClose={() => setDeleteModalOpen(false)}
+        deleteTitleStr={deleteStr}
+        onDelete={() =>
+          opVersionsDelete(
+            opVersionSchema.entity,
+            opVersionSchema.project,
+            opVersionSchema.opId,
+            [opVersionSchema.versionHash]
+          )
+        }
+        onSuccess={closePeek}
+      />
+    </>
+  );
+};
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/common/DeleteModal.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/common/DeleteModal.tsx
new file mode 100644
index 000000000000..e36fa70d189f
--- /dev/null
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/common/DeleteModal.tsx
@@ -0,0 +1,141 @@
+import {
+  Dialog as MaterialDialog,
+  DialogActions as MaterialDialogActions,
+  DialogContent as MaterialDialogContent,
+  DialogTitle as MaterialDialogTitle,
+} from '@material-ui/core';
+import {useViewerInfo} from '@wandb/weave/common/hooks/useViewerInfo';
+import {Button} from '@wandb/weave/components/Button';
+import {Tailwind} from '@wandb/weave/components/Tailwind';
+import React, {useState} from 'react';
+import styled from 'styled-components';
+
+const MAX_DELETE_ROWS_TO_SHOW = 10;
+
+interface DeleteModalProps {
+  open: boolean;
+  onClose: () => void;
+  onDelete: () => Promise<any>;
+  deleteTitleStr: string;
+  deleteBodyStrs?: string[];
+  onSuccess?: () => void;
+}
+
+export const DeleteModal: React.FC<DeleteModalProps> = ({
+  open,
+  onClose,
+  onDelete,
+  deleteTitleStr,
+  deleteBodyStrs,
+  onSuccess,
+}) => {
+  const [deleteLoading, setDeleteLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const handleDelete = () => {
+    setDeleteLoading(true);
+    onDelete()
+      .then(() => {
+        onClose();
+        onSuccess?.();
+      })
+      .catch(err => {
+        setError(err.message);
+      })
+      .finally(() => {
+        setDeleteLoading(false);
+      });
+  };
+
+  const deleteBodyStrRes = deleteBodyStrs ? deleteBodyStrs : [deleteTitleStr];
+
+  return (
+    <Dialog
+      open={open}
+      onClose={() => {
+        onClose();
+        setError(null);
+      }}>
+      <Tailwind>
+        <DialogTitle>Delete {deleteTitleStr}</DialogTitle>
+        <DialogContent className="overflow-hidden">
+          <div className="mb-16">
+            {error != null ? (
+              <p style={{color: 'red'}}>{error}</p>
+            ) : (
+              <p>Are you sure you want to delete?</p>
+            )}
+          </div>
+          <span className="text-md mt-10 font-semibold">
+            {deleteBodyStrRes
+              .slice(0, MAX_DELETE_ROWS_TO_SHOW)
+              .map((str, i) => (
+                <div key={i}>
+                  <span>{str}</span>
+                </div>
+              ))}
+            {deleteBodyStrRes.length > MAX_DELETE_ROWS_TO_SHOW && (
+              <p className="mt-2">
+                and {deleteBodyStrRes.length - MAX_DELETE_ROWS_TO_SHOW} more...
+              </p>
+            )}
+          </span>
+        </DialogContent>
+        <DialogActions $align="left">
+          <Button
+            variant="destructive"
+            disabled={error != null || deleteLoading}
+            onClick={handleDelete}>
+            {`Delete ${deleteTitleStr}`}
+          </Button>
+          <Button
+            variant="ghost"
+            disabled={deleteLoading}
+            onClick={() => {
+              onClose();
+              setError(null);
+            }}>
+            Cancel
+          </Button>
+        </DialogActions>
+      </Tailwind>
+    </Dialog>
+  );
+};
+
+export const useShowDeleteButton = () => {
+  const viewerInfo = useViewerInfo();
+  return viewerInfo.loading ? false : viewerInfo.userInfo?.admin;
+};
+
+const Dialog = styled(MaterialDialog)`
+  .MuiDialog-paper {
+    min-width: 400px;
+    max-width: min(800px, 90vw);
+    width: auto !important;
+  }
+`;
+Dialog.displayName = 'S.Dialog';
+
+const DialogContent = styled(MaterialDialogContent)`
+  padding: 0 32px !important;
+`;
+DialogContent.displayName = 'S.DialogContent';
+
+const DialogTitle = styled(MaterialDialogTitle)`
+  padding: 32px 32px 16px 32px !important;
+
+  h2 {
+    font-weight: 600;
+    font-size: 24px;
+    line-height: 30px;
+  }
+`;
+DialogTitle.displayName = 'S.DialogTitle';
+
+const DialogActions = styled(MaterialDialogActions)<{$align: string}>`
+  justify-content: ${({$align}) =>
+    $align === 'left' ? 'flex-start' : 'flex-end'} !important;
+  padding: 32px 32px 32px 32px !important;
+`;
+DialogActions.displayName = 'S.DialogActions';
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerClient.ts b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerClient.ts
index 9b45049ffc7b..a433c0c087cd 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerClient.ts
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerClient.ts
@@ -14,6 +14,8 @@ import {
   TraceCallUpdateReq,
   TraceObjCreateReq,
   TraceObjCreateRes,
+  TraceObjDeleteReq,
+  TraceObjDeleteRes,
   TraceRefsReadBatchReq,
   TraceRefsReadBatchRes,
 } from './traceServerClientTypes';
@@ -142,6 +144,14 @@ export class TraceServerClient extends CachingTraceServerClient {
     return res;
   }
 
+  public objectDelete(req: TraceObjDeleteReq): Promise<TraceObjDeleteRes> {
+    const res = super.objectDelete(req).then(r => {
+      this.onObjectListeners.forEach(listener => listener());
+      return r;
+    });
+    return res;
+  }
+
   public readBatch(req: TraceRefsReadBatchReq): Promise<TraceRefsReadBatchRes> {
     return this.requestReadBatch(req);
   }
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerClientTypes.ts b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerClientTypes.ts
index 7c89efd44196..6984ac164c33 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerClientTypes.ts
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerClientTypes.ts
@@ -252,6 +252,17 @@ export type TraceObjCreateRes = {
   digest: string;
 };
 
+export type TraceObjDeleteReq = {
+  project_id: string;
+  object_id: string;
+  digests: string[];
+};
+
+export type TraceObjDeleteRes = {
+  num_deleted?: number;
+  detail?: string;
+};
+
 export type TraceRefsReadBatchReq = {
   refs: string[];
 };
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerDirectClient.ts b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerDirectClient.ts
index 22d2ec797810..2254b05ebc84 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerDirectClient.ts
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/traceServerDirectClient.ts
@@ -42,6 +42,8 @@ import {
   TraceFileContentReadRes,
   TraceObjCreateReq,
   TraceObjCreateRes,
+  TraceObjDeleteReq,
+  TraceObjDeleteRes,
   TraceObjQueryReq,
   TraceObjQueryRes,
   TraceObjReadReq,
@@ -232,6 +234,13 @@ export class DirectTraceServerClient {
     return this.makeRequest<TraceObjReadReq, TraceObjReadRes>('/obj/read', req);
   }
 
+  public objectDelete(req: TraceObjDeleteReq): Promise<TraceObjDeleteRes> {
+    return this.makeRequest<TraceObjDeleteReq, TraceObjDeleteRes>(
+      '/obj/delete',
+      req
+    );
+  }
+
   public readBatch(req: TraceRefsReadBatchReq): Promise<TraceRefsReadBatchRes> {
     return this.makeRequest<TraceRefsReadBatchReq, TraceRefsReadBatchRes>(
       '/refs/read_batch',
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/tsDataModelHooks.ts b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/tsDataModelHooks.ts
index 02187b0f65be..c9982cb60ceb 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/tsDataModelHooks.ts
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/tsDataModelHooks.ts
@@ -10,7 +10,12 @@ import {useCallback, useEffect, useMemo, useRef, useState} from 'react';
 
 import * as Types from '../../../../../../core/model/types';
 import {useDeepMemo} from '../../../../../../hookUtils';
-import {isWeaveObjectRef, parseRef} from '../../../../../../react';
+import {
+  isWeaveObjectRef,
+  parseRef,
+  refUri,
+  WeaveObjectRef,
+} from '../../../../../../react';
 import {
   callCache,
   objectVersionCache,
@@ -672,12 +677,13 @@ const useFeedback = (
 const useOpVersion = (
   // Null value skips
   key: OpVersionKey | null
-): Loadable<OpVersionSchema | null> => {
+): LoadableWithError<OpVersionSchema | null> => {
   const getTsClient = useGetTraceServerClientContext();
   const loadingRef = useRef(false);
   const cachedOpVersion = key ? opVersionCache.get(key) : null;
   const [opVersionRes, setOpVersionRes] =
     useState<traceServerTypes.TraceObjReadRes | null>(null);
+  const [error, setError] = useState<any>(null);
   const deepKey = useDeepMemo(key);
   useEffect(() => {
     if (deepKey) {
@@ -695,6 +701,13 @@ const useOpVersion = (
         .then(res => {
           loadingRef.current = false;
           setOpVersionRes(res);
+          if (res.obj == null) {
+            setError(new Error(JSON.stringify(res)));
+            // be conservative and unset the cache when there's an error
+            if (deepKey) {
+              opVersionCache.del(deepKey);
+            }
+          }
         });
     }
   }, [deepKey, getTsClient]);
@@ -704,18 +717,21 @@ const useOpVersion = (
       return {
         loading: false,
         result: null,
+        error,
       };
     }
     if (cachedOpVersion != null) {
       return {
         loading: false,
         result: cachedOpVersion,
+        error,
       };
     }
     if (opVersionRes == null || loadingRef.current) {
       return {
         loading: true,
         result: null,
+        error,
       };
     }
 
@@ -723,6 +739,7 @@ const useOpVersion = (
       return {
         loading: false,
         result: null,
+        error,
       };
     }
 
@@ -739,6 +756,7 @@ const useOpVersion = (
       return {
         loading: true,
         result: null,
+        error,
       };
     }
 
@@ -751,14 +769,95 @@ const useOpVersion = (
     return {
       loading: false,
       result: cacheableResult,
+      error,
+    };
+  }, [cachedOpVersion, key, opVersionRes, error]);
+};
+
+const useOpVersions = (
+  entity: string,
+  project: string,
+  filter: OpVersionFilter,
+  limit?: number,
+  metadataOnly?: boolean,
+  opts?: {skip?: boolean}
+): LoadableWithError<OpVersionSchema[]> => {
+  const getTsClient = useGetTraceServerClientContext();
+  const loadingRef = useRef(false);
+  const [opVersionRes, setOpVersionRes] = useState<
+    LoadableWithError<OpVersionSchema[]>
+  >({
+    loading: false,
+    error: null,
+    result: null,
+  });
+  const deepFilter = useDeepMemo(filter);
+
+  const doFetch = useCallback(() => {
+    if (opts?.skip) {
+      return;
+    }
+    setOpVersionRes({loading: true, error: null, result: null});
+    loadingRef.current = true;
+
+    const req: traceServerTypes.TraceObjQueryReq = {
+      project_id: projectIdFromParts({entity, project}),
+      filter: {
+        object_ids: deepFilter.opIds,
+        latest_only: deepFilter.latestOnly,
+        is_op: true,
+      },
+      limit,
+      metadata_only: metadataOnly,
+    };
+    const onSuccess = (res: traceServerTypes.TraceObjQueryRes) => {
+      loadingRef.current = false;
+      setOpVersionRes({
+        loading: false,
+        error: null,
+        result: res.objs.map(convertTraceServerObjectVersionToOpSchema),
+      });
+    };
+    const onError = (e: any) => {
+      loadingRef.current = false;
+      console.error(e);
+      setOpVersionRes({loading: false, error: e, result: null});
     };
-  }, [cachedOpVersion, key, opVersionRes]);
+    getTsClient().objsQuery(req).then(onSuccess).catch(onError);
+  }, [
+    deepFilter,
+    getTsClient,
+    opts?.skip,
+    entity,
+    project,
+    limit,
+    metadataOnly,
+  ]);
+
+  useEffect(() => {
+    doFetch();
+  }, [doFetch]);
+
+  useEffect(() => {
+    return getTsClient().registerOnObjectListener(doFetch);
+  }, [getTsClient, doFetch]);
+
+  return useMemo(() => {
+    if (opts?.skip) {
+      return {loading: false, error: null, result: null};
+    }
+    if (opVersionRes == null || loadingRef.current) {
+      return {loading: true, error: null, result: null};
+    }
+    return opVersionRes;
+  }, [opVersionRes, opts?.skip]);
 };
 
+// Helper function to convert trace server object version to op schema
 const convertTraceServerObjectVersionToOpSchema = (
   obj: traceServerTypes.TraceObjSchema
 ): OpVersionSchema => {
-  const [entity, project] = obj.project_id.split('/');
+  const {entity, project} = projectIdToParts(obj.project_id);
   return {
     entity,
     project,
@@ -769,36 +868,6 @@ const convertTraceServerObjectVersionToOpSchema = (
   };
 };
 
-const useOpVersions = makeTraceServerEndpointHook<
-  'objsQuery',
-  [string, string, OpVersionFilter, number?, boolean?, {skip?: boolean}?],
-  OpVersionSchema[]
->(
-  'objsQuery',
-  (
-    entity: string,
-    project: string,
-    filter: OpVersionFilter,
-    limit?: number,
-    metadataOnly?: boolean,
-    opts?: {skip?: boolean}
-  ) => ({
-    params: {
-      project_id: projectIdFromParts({entity, project}),
-      filter: {
-        object_ids: filter.opIds,
-        latest_only: filter.latestOnly,
-        is_op: true,
-      },
-      limit,
-      metadata_only: metadataOnly,
-    },
-    skip: opts?.skip,
-  }),
-  (res): OpVersionSchema[] =>
-    res.objs.map(convertTraceServerObjectVersionToOpSchema)
-);
-
 const useFileContent = makeTraceServerEndpointHook<
   'fileContent',
   [string, string, string, {skip?: boolean}?],
@@ -823,12 +892,13 @@ const useFileContent = makeTraceServerEndpointHook<
 const useObjectVersion = (
   // Null value skips
   key: ObjectVersionKey | null
-): Loadable<ObjectVersionSchema | null> => {
+): LoadableWithError<ObjectVersionSchema | null> => {
   const getTsClient = useGetTraceServerClientContext();
   const loadingRef = useRef(false);
   const cachedObjectVersion = key ? objectVersionCache.get(key) : null;
   const [objectVersionRes, setObjectVersionRes] =
     useState<traceServerTypes.TraceObjReadRes | null>(null);
+  const [error, setError] = useState<Error | null>(null);
   const deepKey = useDeepMemo(key);
   useEffect(() => {
     if (deepKey) {
@@ -845,7 +915,18 @@ const useObjectVersion = (
         })
         .then(res => {
           loadingRef.current = false;
-          setObjectVersionRes(res);
+          if (res.obj == null) {
+            if ('deleted_at' in res) {
+              setError(new Error(JSON.stringify(res)));
+            } else {
+              setError(new Error('Object not found'));
+            }
+          } else {
+            setObjectVersionRes(res);
+          }
+        })
+        .catch(err => {
+          setError(new Error(JSON.stringify(err)));
         });
     }
   }, [deepKey, getTsClient]);
@@ -855,18 +936,21 @@ const useObjectVersion = (
       return {
         loading: false,
         result: null,
+        error,
       };
     }
     if (cachedObjectVersion != null) {
       return {
         loading: false,
         result: cachedObjectVersion,
+        error,
       };
     }
     if (objectVersionRes == null || loadingRef.current) {
       return {
         loading: true,
         result: null,
+        error,
       };
     }
 
@@ -874,6 +958,7 @@ const useObjectVersion = (
       return {
         loading: false,
         result: null,
+        error,
       };
     }
 
@@ -889,6 +974,7 @@ const useObjectVersion = (
       return {
         loading: true,
         result: null,
+        error,
       };
     }
 
@@ -901,8 +987,9 @@ const useObjectVersion = (
     return {
       loading: false,
       result: cacheableResult,
+      error,
     };
-  }, [cachedObjectVersion, key, objectVersionRes]);
+  }, [cachedObjectVersion, key, objectVersionRes, error]);
 };
 
 export const convertTraceServerObjectVersionToSchema = <
@@ -1012,6 +1099,130 @@ const useRootObjectVersions = (
   }, [objectVersionRes, opts?.skip]);
 };
 
+const useObjectDeleteFunc = () => {
+  const getTsClient = useGetTraceServerClientContext();
+
+  const makeObjectRef = (key: ObjectVersionKey) => {
+    const ref: WeaveObjectRef = {
+      scheme: 'weave',
+      entityName: key.entity,
+      projectName: key.project,
+      weaveKind: 'object',
+      artifactName: key.objectId,
+      artifactVersion: key.versionHash,
+    };
+    return refUri(ref);
+  };
+
+  const makeOpRef = (key: OpVersionKey) => {
+    const ref: WeaveObjectRef = {
+      scheme: 'weave',
+      entityName: key.entity,
+      projectName: key.project,
+      weaveKind: 'op',
+      artifactName: key.opId,
+      artifactVersion: key.versionHash,
+    };
+    return refUri(ref);
+  };
+
+  const updateObjectCaches = useCallback((key: ObjectVersionKey) => {
+    objectVersionCache.del(key);
+    const ref = makeObjectRef(key);
+    refDataCache.del(ref);
+  }, []);
+
+  const updateOpCaches = useCallback((key: OpVersionKey) => {
+    opVersionCache.del(key);
+    const ref = makeOpRef(key);
+    refDataCache.del(ref);
+  }, []);
+
+  const objectVersionsDelete = useCallback(
+    (entity: string, project: string, objectId: string, digests: string[]) => {
+      digests.forEach(digest => {
+        updateObjectCaches({
+          scheme: 'weave',
+          weaveKind: 'object',
+          entity,
+          project,
+          objectId,
+          versionHash: digest,
+          path: '',
+        });
+      });
+      return getTsClient().objectDelete({
+        project_id: projectIdFromParts({
+          entity,
+          project,
+        }),
+        object_id: objectId,
+        digests,
+      });
+    },
+    [getTsClient, updateObjectCaches]
+  );
+
+  const objectDeleteAllVersions = useCallback(
+    (key: ObjectVersionKey) => {
+      updateObjectCaches(key);
+      return getTsClient().objectDelete({
+        project_id: projectIdFromParts({
+          entity: key.entity,
+          project: key.project,
+        }),
+        object_id: key.objectId,
+        digests: [],
+      });
+    },
+    [getTsClient, updateObjectCaches]
+  );
+
+  const opVersionsDelete = useCallback(
+    (entity: string, project: string, opId: string, digests: string[]) => {
+      digests.forEach(digest => {
+        updateOpCaches({
+          entity,
+          project,
+          opId,
+          versionHash: digest,
+        });
+      });
+      return getTsClient().objectDelete({
+        project_id: projectIdFromParts({
+          entity,
+          project,
+        }),
+        object_id: opId,
+        digests,
+      });
+    },
+    [getTsClient, updateOpCaches]
+  );
+
+  const opDeleteAllVersions = useCallback(
+    (key: OpVersionKey) => {
+      updateOpCaches(key);
+      return getTsClient().objectDelete({
+        project_id: projectIdFromParts({
+          entity: key.entity,
+          project: key.project,
+        }),
+        object_id: key.opId,
+        digests: [],
+      });
+    },
+    [getTsClient, updateOpCaches]
+  );
+
+  return {
+    objectVersionsDelete,
+    objectDeleteAllVersions,
+    opVersionsDelete,
+    opDeleteAllVersions,
+  };
+};
+
 const useRefsReadBatch = makeTraceServerEndpointHook<
   'readBatch',
   [string[], {skip?: boolean}?],
@@ -1785,6 +1996,7 @@ export const tsWFDataModelHooks: WFDataModelHooksInterface = {
   useOpVersion,
   useOpVersions,
   useObjectVersion,
+  useObjectDeleteFunc,
   useRootObjectVersions,
   useRefsData,
   useApplyMutationsToRef,
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/tsDataModelHooksEvaluationComparison.ts b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/tsDataModelHooksEvaluationComparison.ts
index c321accd487e..5a918ed46d16 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/tsDataModelHooksEvaluationComparison.ts
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/tsDataModelHooksEvaluationComparison.ts
@@ -414,6 +414,9 @@ const fetchEvaluationSummaryData = async (
       const ref = modelRefs[objNdx];
       const parsed = parseRef(ref) as WeaveObjectRef;
       const objData = objVal;
+      if (objData == null) {
+        return [ref, null];
+      }
       return [
         ref,
         {
@@ -497,25 +500,28 @@ const fetchEvaluationComparisonResults = async (
     });
 
   // 3.5 Populate the inputs
-  // We only ned 1 since we are going to effectively do an inner join on the rowDigest
+  // We only need 1 since we are going to effectively do an inner join on the rowDigest
   const datasetRef = Object.values(summaryData.evaluations)[0]
     .datasetRef as string;
   const datasetObjRes = await traceServerClient.readBatch({refs: [datasetRef]});
-  const rowsRef = datasetObjRes.vals[0].rows;
-  const parsedRowsRef = parseRef(rowsRef) as WeaveObjectRef;
-  const rowsQuery = await traceServerClient.tableQuery({
-    project_id: projectIdFromParts({
-      entity: parsedRowsRef.entityName,
-      project: parsedRowsRef.projectName,
-    }),
-    digest: parsedRowsRef.artifactVersion,
-  });
-  rowsQuery.rows.forEach(row => {
-    result.inputs[row.digest] = {
-      digest: row.digest,
-      val: row.val,
-    };
-  });
+  // If the dataset has not been deleted, fetch rows
+  if (datasetObjRes.vals[0] != null) {
+    const rowsRef = datasetObjRes.vals[0].rows;
+    const parsedRowsRef = parseRef(rowsRef) as WeaveObjectRef;
+    const rowsQuery = await traceServerClient.tableQuery({
+      project_id: projectIdFromParts({
+        entity: parsedRowsRef.entityName,
+        project: parsedRowsRef.projectName,
+      }),
+      digest: parsedRowsRef.artifactVersion,
+    });
+    rowsQuery.rows.forEach(row => {
+      result.inputs[row.digest] = {
+        digest: row.digest,
+        val: row.val,
+      };
+    });
+  }
 
   // 4. Populate the predictions and scores
   const evalTraceRes = await evalTraceResProm;
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/utilities.ts b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/utilities.ts
index 1e27e2c5c00e..b1d3c0849c9a 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/utilities.ts
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/utilities.ts
@@ -287,6 +287,17 @@ export const objectVersionNiceString = (ov: ObjectVersionSchema) => {
   return result;
 };
 
+export const isObjDeleteError = (error: Error | null): boolean => {
+  if (error == null) {
+    return false;
+  }
+  const message = JSON.parse(error.message);
+  if ('deleted_at' in message) {
+    return true;
+  }
+  return false;
+};
+
 /// Hooks ///
 
 export const useParentCall = (
diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/wfDataModelHooksInterface.ts b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/wfDataModelHooksInterface.ts
index 34496ffeed04..08fd47101777 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/wfDataModelHooksInterface.ts
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/wfReactInterface/wfDataModelHooksInterface.ts
@@ -220,7 +220,9 @@ export type WFDataModelHooksInterface = {
     val: any,
     baseObjectClass?: string
   ) => Promise<string>;
-  useOpVersion: (key: OpVersionKey | null) => Loadable<OpVersionSchema | null>;
+  useOpVersion: (
+    key: OpVersionKey | null
+  ) => LoadableWithError<OpVersionSchema | null>;
   useOpVersions: (
     entity: string,
     project: string,
@@ -231,7 +233,7 @@ export type WFDataModelHooksInterface = {
   ) => LoadableWithError<OpVersionSchema[]>;
   useObjectVersion: (
     key: ObjectVersionKey | null
-  ) => Loadable<ObjectVersionSchema | null>;
+  ) => LoadableWithError<ObjectVersionSchema | null>;
   useTableRowsQuery: (
     entity: string,
     project: string,
@@ -256,6 +258,26 @@ export type WFDataModelHooksInterface = {
     metadataOnly?: boolean,
     opts?: {skip?: boolean; noAutoRefresh?: boolean}
   ) => LoadableWithError<ObjectVersionSchema[]>;
+  useObjectDeleteFunc: () => {
+    objectVersionsDelete: (
+      entity: string,
+      project: string,
+      objectId: string,
+      digests: string[]
+    ) => Promise<traceServerClientTypes.TraceObjDeleteRes>;
+    objectDeleteAllVersions: (
+      key: ObjectVersionKey
+    ) => Promise<traceServerClientTypes.TraceObjDeleteRes>;
+    opVersionsDelete: (
+      entity: string,
+      project: string,
+      opId: string,
+      digests: string[]
+    ) => Promise<traceServerClientTypes.TraceObjDeleteRes>;
+    opDeleteAllVersions: (
+      key: OpVersionKey
+    ) => Promise<traceServerClientTypes.TraceObjDeleteRes>;
+  };
   // `useRefsData` is in beta while we integrate Shawn's new Object DB
   useRefsData: (refUris: string[], tableQuery?: TableQuery) => Loadable<any[]>;
   // `useApplyMutationsToRef` is in beta while we integrate Shawn's new Object DB