Abu Hassan is a comic opera in one act by Carl Maria von Weber to a German libretto by Franz Carl Hiemer (de), based on a story in One Thousand and One Nights. It was composed between 11 August 1810 and 12 January 1811 and has set numbers with recitative and spoken dialogue. The work is a Singspiel in the then popular Turkish style.

Abu Hassan was first performed at the Residenz Theater in Munich on 4 June 1811, under Peter Winter. In London, it was produced in English at Theatre Royal, Drury Lane in 1835, and in Italian at Drury Lane on 12 May 1870 (at the same time as Mozart's L'oca del Cairo), the translation being made by Salvatore Marchesi (it), and the dialogue set to recitative by Luigi Arditi.