Auguste-Hyacinthe Debay (French pronunciation: [oɡyst jasɛ̃t dəbɛ]; Nantes 1804–1865 Paris) was a French painter and sculptor. He was the son of the eminent sculptor Jean Baptiste Joseph Debay, though really a sculptor, began life as an historical painter. In 1817, when only thirteen years of age, sent his first portraits to the Salon. After studying under Gros, he obtained the 'Prix de Rome' in 1823. Soon after this he gave up painting for sculpture, which he studied under his father, and in which he was very successful. Some of his historical paintings are at Versailles.