<em>Oath of the Horatii</em> (French: Le Serment des Horaces), is a work by French artist Jacques-Louis David painted in 1784. It depicts a scene from a Roman legend about a dispute between two warring cities; Rome and Alba Longa, when three brothers from a Roman family, the Horatii, agree to end the war by fighting three brothers from an Alba Longa family, the Curiatii. The three brothers, all of which appear willing to sacrifice their lives for the good of Rome, are shown saluting their father who holds their swords out for them. The principal sources for the story behind David's Oath are the first book of Livy (sections 24-6) which was elaborated by Dionysius in book 3 of his Roman Antiquities. However, the moment depicted in David's painting is his own invention.
It grew to be considered a paradigm of neoclassical art. The painting increased David's fame, allowing him to rear his own students.