| Fancy O'Neil | |
| Position: | Right fielder |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | 1853 |
| Birth Place: | Hartford, Connecticut |
| Death Place: | Hartford, Connecticut |
| Debutleague: | MLB |
| Debutdate: | October 23 |
| Debutyear: | 1874 |
| Debutteam: | Hartford Dark Blues |
| Finalleague: | MLB |
| Finaldate: | October 23 |
| Finalyear: | 1874 |
| Finalteam: | Hartford Dark Blues |
| Statleague: | MLB |
| Stat1label: | Games played |
| Stat1value: | 1 |
| Stat2label: | At bats |
| Stat2value: | 3 |
| Stat3label: | Batting average |
| Stat3value: | .000 |
| Teams: | |
Michael "Fancy" O'Neil (1853 – October 10, 1917) was an American professional baseball player whose career in the National Association consisted of one game for the Hartford Dark Blues.[1] The game took place on October 23, 1874, when he played all nine innings in right field in a 13–1 loss to the Boston Red Stockings.[2] Peter Morris, a member of SABR, claims that O'Neil's nickname of "Fancy" is from his time as a boxer, as well as that he was born in Ireland to parents Michael and Sarah.[3] He grew up in New York City and Hartford, Connecticut.[3]