Azumanga Daioh (Japanese: あずまんが大王 Hepburn: Azumanga Daiō?, lit. "Great King Azumanga") is a Japanese yonkoma comedy manga series written and illustrated by Kiyohiko Azuma, which was serialized in MediaWorks' Dengeki Daioh magazine between 1999 and 2002. Three additional chapters were published in Shogakukan's Monthly Shōnen Sunday in May 2009 to celebrate the manga's tenth anniversary. The manga was first released in English by ADV Manga, and was later re-issued by Yen Press.
A television anime adaptation titled Azumanga Daioh: the Animation was produced by J.C.Staff and aired in Japan between April and September 2002, consisting of 130 five-minute segments compiled into 26 episodes. The compiled episodes were released on DVD and Universal Media Discs (UMDs) by Starchild Records, and an English-language version was produced by ADV Films. Prior to the series, a theatrical short and an original net animation were also produced. Several soundtrack albums were released, as well as three Azumanga Daioh video games.
Both the manga and anime have been praised for their humor driven by eccentric characters, with Azuma acclaimed as a "master of the four-panel form" for both his art style and comic timing.