Donald F. 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. The Blackhawks joined the National Basketball Association 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. He averaged 10.5 points per game in his NBA career.
Otten holds the NBA record for most personal fouls in a game, with eight. He set the record in a November 24, 1949 game between Tri-Cities and the Sheboygan Red Skins. NBA Rule 3, Section I permits a player to remain in the game after fouling out if no other players are available on the bench.