Oath of the Horatii is a large painting by the French artist Jacques-Louis David painted in 1784 and 1785 and now on display in the Louvre in Paris. The painting immediately became a huge success with critics and the public and remains one of the best-known paintings in the Neoclassical style.

Jacques-Louis David was a French painter in the Neoclassical style, considered to be the preeminent painter of the era. In the 1780s, his cerebral brand of history painting marked a change in taste away from Rococo frivolity toward classical austerity, severity, and heightened feeling, which harmonized with the moral climate of the final years of the Ancien Régime.