William John Bonness (December 15, 1923 – December 3, 1977), nicknamed "Lefty", was a Major League Baseball pitcher who played for one season. He played for the Cleveland Indians from September 26, 1944, to September 29, 1944.
Bill Bonness
| Given name: | William John Bonness |
| Nicknames: | None |
| Primary Pos: | Pitcher |
| Hght/Wght: | 6'4" / 200 lbs |
| Bats/Throws: | R / L |
| Born: | Dec 15, 1923 in Cleveland, OH |
| Died: | Dec 3, 1977 in Cleveland, OH (53 years old) |
| Debut: | Sep 26, 1944 |