Abu Hassan is a comic opera in one act by Carl Maria von Weber to a German libretto by Franz Carl Hiemer, 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.

Carl Maria Friedrich Ernst von Weber was a German composer, conductor, virtuoso pianist, guitarist, and critic of the early Romantic period. Best known for his operas, he was a crucial figure in the development of German Romantische Oper.