| Bill Pierro | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 15 April 1926 |
| Birth Place: | Brooklyn, New York |
| Death Place: | Brooklyn, New York |
| Debutleague: | MLB |
| Debutdate: | July 17 |
| Debutyear: | 1950 |
| Debutteam: | Pittsburgh Pirates |
| Finalleague: | MLB |
| Finaldate: | September 19 |
| Finalyear: | 1950 |
| Finalteam: | Pittsburgh Pirates |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0-2 |
| Stat2label: | Earned run average |
| Stat2value: | 10.55 |
| Stat3label: | Strikeouts |
| Stat3value: | 13 |
| Teams: | |
William Leonard Pierro (April 15, 1926 – April 1, 2006), nicknamed "Wild Bill", was a pitcher in Major League Baseball. He played for the Pittsburgh Pirates.[1]