Thomas Gaal, a painter of portraits, birds, and flowers, was born at Dendermonde in about 1739.

He fixed his residence at Middelburg, and was one of the founders and directors of the Academy in that town.

J. Perkois, J. H. Koekkoek, and S. De Koster were his pupils.

The painter Pieter Gaal was his son.

This article about a Flemish painter mainly active between 1581 and 1830 is a stub.