| Bill Perrin | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Left |
| Birth Date: | 23 June 1923 |
| Birth Place: | New Orleans, Louisiana |
| Death Place: | New Orleans, Louisiana |
| Debutleague: | MLB |
| Debutdate: | September 30 |
| Debutyear: | 1934 |
| Debutteam: | Cleveland Indians |
| Finalleague: | MLB |
| Finaldate: | September 30 |
| Finalyear: | 1934 |
| Finalteam: | Cleveland Indians |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0–1 |
| Stat2label: | Earned run average |
| Stat2value: | 14.40 |
| Stat3label: | Strikeouts |
| Stat3value: | 3 |
| Teams: | |
William Joseph "Lefty" Perrin (June 23, 1910 – June 30, 1974) was a Major League Baseball pitcher who played for one season. He played for the Cleveland Indians for one game on September 30 during the 1934 Cleveland Indians season.He also played for the "New Orleans Pelicans" under well-known Minor League manager – Larry Gilbert, and was inducted into the New Orleans–based "Diamond Club Hall of Fame" in 1971. He was a cousin of World Champion boxer Jimmy Perrin.