Abu Hassan is an opera in one act by Carl Maria von Weber to a German libretto by Franz Hiemer, based on a story in A Thousand and One Nights. It was first performed at the Residenztheater in Munich on June 4, 1811.
The opera has set numbers with recitative and spoken dialog. It is set in Baghdad in an unspecified time.
Abu Hassan is not part of the standard operatic repertory. Recordings exist, and it is sometimes performed.