a French painter of allegorical scenes and portraits. He studied under his father, the painter Jean-Baptiste van Loo, at Turin and Rome, where in 1738 he won the Prix de Rome, then at Aix-en-Provence, before returning to Paris in 1745. He was invited to join the Académie Royale de Peinture et de Sculpture in 1747, and that year he married his cousin Marie-Marguerite Lebrun, daughter of the painter Michel Lebrun (died 1753). He was the author of the only known real-life portrait of the Marquis de Sade. Among his brothers were the painters François van Loo (1708–1732) and Louis-Michel van Loo (1707–1771).
