Otto A. Stangel (March 23, 1889 – March 29, 1956), a native of Two Rivers, Wisconsin, was an NCAA Men's Basketball All-American basketball player at the University of Wisconsin–Madison in 1911–12.
He led the Big Ten Conference in scoring with 177 points, a record which stood for eight years.
The Badgers went undefeated in 1911–12 at 15–0 and were named co-Big Ten champions as well as retroactively-named national champions by the Helms Athletic Foundation.
Helms also named Stangel an All-American in 1912.
Stangel was later the superintendent of farms at Delaware Valley University and the school's football coach in 1923.