Ojamajo Doremi (おジャ魔女どれみ, lit. "Bothersome Witch Doremi"), alternatively titled Magical DoReMi in English, is a Japanese fantasy magical girl anime television series created by Toei Animation. It focuses on a group of elementary school girls, led by Doremi Harukaze, who become witch apprentices. The series aired in Japan on ABC, TV Asahi, and other ANN affiliates between February 1999 and January 2003, spanning four seasons and 201 episodes, and was followed by an original video animation series released between June and December 2004. An English-language version of the first season, produced by 4Kids Entertainment, aired in North America in 2005.

Ojamajo Doremi has inspired two companion films, manga adaptations, video games, and a light novel sequel series. A 20th anniversary film titled Looking for Magical Doremi was released on November 13, 2020.