| Bill Fagan | |
| Position: | Pitcher |
| Birth Date: | February 15, 1869 |
| Birth Place: | Troy, New York |
| Death Place: | Troy, New York |
| Bats: | Unknown |
| Throws: | Left |
| Debutleague: | MLB |
| Debutdate: | September 15 |
| Debutyear: | 1887 |
| Debutteam: | New York Metropolitans |
| Finalleague: | MLB |
| Finaldate: | July 20 |
| Finalyear: | 1888 |
| Finalteam: | Kansas City Cowboys |
| Statleague: | MLB |
| Stat1label: | Win/Loss Record |
| Stat1value: | 6-15 |
| Stat2label: | E.R.A. |
| Stat2value: | 5.28 |
| Stat3label: | Strikeouts |
| Stat3value: | 61 |
| Stat4label: | Batting average |
| Stat4value: | .198 |
| Teams: | |
William A. Fagan (February 15, 1869 – March 21, 1930), nicknamed "Clinkers", was an American baseball player who played for the New York Metropolitans and the Kansas City Cowboys from 1887 to 1888 .