Oreste ("Orestes", HWV A11, HG 48/102) is an opera by George Frideric Handel in three acts. The libretto was anonymously adapted from ’s L’Oreste (1723, Rome), which was in turn adapted from Euripides' Iphigeneia in Tauris. The opera is in Italian, although it was written and performed in England. The lead role was written for the castrato Giovanni Carestini. It is now performed by either a countertenor or soprano.