Alan Dinehart, sometimes credited as Alan Dinehart Jr., was an American voice actor and voice director known for his work in anime and animation. His birth name is Mason Alan Dinehart, and he was active in the industry from the mid-twentieth century. In the world of anime, Dinehart is most recognized for his contributions to the English adaptation of the classic science fiction series Gatchaman.

Specifically, Dinehart was a part of the Sandy Frank English dub of Gatchaman, which was produced for North American audiences. In this adaptation, he performed the voice of the character Tiny (G-3), a member of the titular science ninja team. In addition to voicing Tiny, Dinehart also provided the voice for Security Chief Anderson, a key supporting character in the series. His work on this project extended beyond performing; he also served in several behind-the-scenes capacities, including as a director, producer, assistant voice director, and recording director assistant for the English version. This adaptation of Gatchaman was later re-cut and re-titled as Battle of the Planets, a version in which Dinehart is also credited for voicing the characters Tiny and Chief Anderson across numerous episodes.

Beyond his performance roles, Dinehart had a significant career as a voice director. He worked for Sunbow Entertainment, serving as a voice director for the My Little Pony series in the mid-1980s. His work in animation also included contributions to Disney properties, where he worked as a writer, voice director, and provided additional voices for various productions. He was born on March 12, 1918, in Minneapolis, Minnesota, and died on March 14, 1992, in Los Angeles, California.