Portrait of Denis Diderot is a 1767 portrait painting by the French artist Louis-Michel van Loo.

Rococo in style, it depicts the philosopher, writer and art critic Denis Diderot, a significant figure in the Age of Enlightenment in Ancien régime France.

[1] It was common in the eighteenth century for writers to be portrayed in dressing gowns to indicate their literary interests.

[3] [4] It was exhibited at the Salon of 1767 at the Louvre in Paris, which Diderot wrote about extensively.

[5] Today it is in the collection of the Louvre, having been acquired in 1911.