Donald Frederick Otten (April 18, 1921 – September 18, 1985) was an American professional basketball player.

A 6'10" center from Bellefontaine High School (Ohio) and Bowling Green State University, Otten began his professional career in 1946 with the Tri-Cities Blackhawks of the National Basketball League.

During the 1948–49 NBL season, Otten averaged 14.0 points per game and earned league MVP honors.

[1] The Blackhawks joined the National Basketball Association (NBA) in 1949, and Otten continued playing until 1953, competing for Tri-Cities as well as the Washington Capitols, Baltimore Bullets, Fort Wayne Pistons, and Milwaukee Hawks.

This biographical article relating to a United States basketball player, coach, or other figure born in the 1920s is a stub.