Harry Herman O'Donnell
- Bats Right, Throws Right
- Height 5' 8", Weight 175 lb.
- Debut April 30, 1927
- Final Game September 30, 1927
- Born April 2, 1894 in Philadelphia, PA USA
- Died January 31, 1958 in Philadelphia, PA USA
Harry "Butch" O'Donnell played for the Philadelphia Phillies in 1927, getting into 16 games at the age of 33. His minor league career was at least from 1915 to 1928, and he managed in the minors in 1935.
He was remembered many years later when Chris Coste, also a catcher, made his debut in 2006 and was even a bit older than O'Donnell was in his Phillies debut. As of 2006, Harry was the 10th oldest catcher in major league history to make his major league debut.