Jacques Thuillier, (March 18, 1928, Vaucouleurs, Meuse – October 18, 2011, Paris) was a French art historian specializing in 17th-century French painting.
Thuillier was an honorary professor at the Collège de France, where he taught history of artistic creation from 1977 to 1998.
He was a renowned specialist of French painting and, alongside the late Anthony Blunt, a leading authority on Nicolas Poussin.