| Gene Bagley | |
| Position: | Catcher/Outfielder |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | June 7, 1861 |
| Birth Place: | New York City |
| Death Place: | Long Island City, New York |
| Debutleague: | MLB |
| Debutdate: | September 11 |
| Debutyear: | 1886 |
| Debutteam: | New York Giants |
| Finalleague: | MLB |
| Finaldate: | October 1 |
| Finalyear: | 1886 |
| Finalteam: | New York Giants |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .125 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs scored |
| Stat3value: | 1 |
| Teams: |
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Eugene T. Bagley (June 7, 1861 – August 15, 1901) was a 19th-century professional baseball player. He played catcher and outfielder for the 1886 New York Giants.