François Xavier Joseph Jacquin or Frans Jaquin (Brussels, 1756 – Leuven, 1 November 1826) was a Flemish painter and draughtsman known for his portraits, still lifes and landscapes. He was in demand as a portrait painter of religious dignitaries, the nobility and the bourgeoisie. As a still life painter he created game pieces and trompe-l'œil still lifes of game birds.