William Bernhard Haeffner
- Bats Right, Throws Right
- Height 5' 9", Weight 165 lb.
- Debut June 29, 1915
- Final Game May 5, 1928
- Born July 8, 1894 in Philadelphia, PA USA
- Died January 27, 1982 in Springfield, PA USA
Bill Haeffner played in the majors three times, years apart from each other. He was in the majors in 1915, 1920, and 1928. Almost all of his at-bats were in 1920.
At one time, Haeffner played for a semi-pro team called the Nashua Millionaires, and he was the hero of a kid named Birdie Tebbetts. Haeffner loaned Tebbetts a glove, and Tebbetts' career started. Source: 1957 story about Tebbetts