Azumanga Daioh is a Japanese yonkoma comedy manga series written and illustrated by Kiyohiko Azuma. It was serialized from February 1999 to May 2002 in the monthly magazine Dengeki Daioh by MediaWorks; 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 later re-issued by Yen Press.

Monthly Comic Dengeki Daioh is a Japanese shōnen manga magazine published by ASCII Media Works under the Dengeki brand. Many manga serialized in Dengeki Daioh were later published in tankōbon volumes under ASCII Media Works' Dengeki Comics imprint. The magazine is sold every month on the 27th. A yonkoma section of Dengeki Daioh called Dengeki Yonkoma Daioh (電撃4コマ大王) features various omake strips of the manga series published in it. The format is typically a normal drawing on the right side featuring one or sometimes more characters, and a vertical four panel strip on the left featuring characters from the associated series in super deformed form. Two special editions of the magazine called Dengeki Moeoh and Dengeki Daioh Genesis are sold bimonthly and quarterly, respectively.