| Bill Irwin | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | September 16, 1859 |
| Birth Place: | Neville, Ohio |
| Death Place: | Fort Thomas, Kentucky |
| Debutleague: | MLB |
| Debutdate: | August 30 |
| Debutteam: | Cincinnati Red Stockings (AA) |
| Finalleague: | MLB |
| Finaldate: | October 7 |
| Finalteam: | Cincinnati Red Stockings (AA) |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0–2 |
| Stat2label: | Strikeouts |
| Stat2value: | 6 |
| Stat3label: | ERA |
| Stat3value: | 5.82 |
| Teams: | |
William Franklin Irwin (September 16, 1859 – August 7, 1933) was a baseball player for the Cincinnati Red Stockings (AA) in 1886. He batted right and threw right-handed. He was born in Neville, Ohio and died in Fort Thomas, Kentucky.