Dardanus is an opera by Antonio Sacchini. It takes the form of a tragédie lyrique in four acts. It was first performed at Versailles on 18 September 1784, and subsequently at the Paris Opera on 30 November of the same year. The French-language libretto was adapted by Nicolas-François Guillard from that by Charles-Antoine Leclerc de La Bruère, which had already been set to music by Jean-Philippe Rameau in his earlier opera of the same name.