| Wild Bill Widner | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | June 3, 1867 |
| Birth Place: | Cincinnati, Ohio |
| Death Place: | Cincinnati, Ohio |
| Debutleague: | MLB |
| Debutdate: | June 8 |
| Debutyear: | 1887 |
| Debutteam: | Cincinnati Red Stockings |
| Finalleague: | MLB |
| Finaldate: | July 23 |
| Finalyear: | 1891 |
| Finalteam: | Cincinnati Kelly's Killers |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 22-36 |
| Stat2label: | Strikeouts |
| Stat2value: | 110 |
| Stat3label: | Earned run average |
| Stat3value: | 4.36 |
| Teams: |
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William Waterfield "Wild Bill" Widner (1867-1908) was a professional baseball pitcher. He pitched all or part of five seasons in the majors, from until, for the Cincinnati Red Stockings, Washington Nationals, Columbus Solons, and Cincinnati Kelly's Killers.