diff --git a/src/dual.jl b/src/dual.jl
index 7e8ec110..180dc1b7 100644
--- a/src/dual.jl
+++ b/src/dual.jl
@@ -88,6 +88,7 @@ Dual{T,V,N}(x::Base.TwicePrecision) where {T,V,N} =
 
 @inline value(x) = x
 @inline value(d::Dual) = d.value
+@inline value(d::Complex{<:Dual}) = complex(value(real(d)), value(imag(d)))
 
 @inline value(::Type{T}, x) where T = x
 @inline value(::Type{T}, d::Dual{T}) where T = value(d)
@@ -101,6 +102,8 @@ end
 
 @inline partials(x) = Partials{0,typeof(x)}(tuple())
 @inline partials(d::Dual) = d.partials
+@inline partials(d::Complex{<:Dual}, i) = complex(partials(real(d), i), partials(imag(d), i))
+@inline partials(d::Complex{<:Dual}) = Partials(complex.(partials(real(d)).values, partials(imag(d)).values))
 @inline partials(x, i...) = zero(x)
 @inline Base.@propagate_inbounds partials(d::Dual, i) = d.partials[i]
 @inline Base.@propagate_inbounds partials(d::Dual, i, j) = partials(d, i).partials[j]
@@ -119,6 +122,8 @@ end
 
 @inline npartials(::Dual{T,V,N}) where {T,V,N} = N
 @inline npartials(::Type{Dual{T,V,N}}) where {T,V,N} = N
+@inline npartials(::Complex{<:Dual{T,V,N}}) where {T,V,N} = N
+@inline npartials(::Type{<:Complex{<:Dual{T,V,N}}}) where {T,V,N} = N
 
 @inline order(::Type{V}) where {V} = 0
 @inline order(::Type{Dual{T,V,N}}) where {T,V,N} = 1 + order(V)
diff --git a/test/DualTest.jl b/test/DualTest.jl
index 6d0bf85f..528d60b4 100644
--- a/test/DualTest.jl
+++ b/test/DualTest.jl
@@ -4,7 +4,7 @@ using Test
 using Printf
 using Random
 using ForwardDiff
-using ForwardDiff: Partials, Dual, value, partials
+using ForwardDiff: Partials, Dual, value, partials, npartials
 
 using NaNMath, SpecialFunctions, LogExpFunctions
 using DiffRules
@@ -673,4 +673,14 @@ end
     @test ForwardDiff.derivative(x -> sum(1 .+ x .* (0:0.1:1)), 1) == 5.5
 end
 
+@testset "Complex value/partials" begin
+    x = Dual(1,2,3) + im*Dual(4,5,6)
+    @test value(x) == 1+im*4
+    @test partials(x,1) == 2 + 5im
+    @test partials(x,2) == 3 + 6im
+    @test partials(x) == [2+5im,3+6im]
+    @test partials(x) isa Partials
+    @test npartials(x) == npartials(typeof(x)) == 2
+end
+
 end # module