Gillis Smak Gregoor (1770 - 1843), was a Dutch landscape painter.
He was born in Dordrecht, South Holland and was a pupil of Abraham and Jacob van Strij.[1] He is known for landscapes with animals and was a member of the Pictura painter's collective in Dordrecht. His pupil was Matthijs Quispel.[1] He died in Dordrecht.