Jacques Vaillant (1643, in Amsterdam – 1691, in Berlin), was a Dutch Golden Age painter. According to Houbraken he learned to paint from his older brother Wallerant Vaillant. He travelled to Rome and joined the Bentvueghels with the nickname Leeurik. He became court painter for Friedrich Wilhelm I of Brandenburg after his envoy invited him to Berlin. The Great Elector was so pleased with his work that he sent him to the Emperor Leopold I to paint his portrait. When Vaillant returned from this trip to Berlin, he died soon after.