Rosamond is an opera in three acts by Thomas Clayton with a libretto by Joseph Addison. It was first performed on 4 March 1707 at Drury Lane.

Joseph Addison was an English essayist, poet, playwright, and politician. He was the eldest son of Lancelot Addison. His name is usually remembered alongside that of his long-standing friend Richard Steele, with whom he founded The Spectator magazine. His simple prose style marked the end of the mannerisms and conventional classical images of the 17th century.