| Gene Derby | |
| Position: | Catcher |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | February 3, 1860 |
| Birth Place: | Fitchburg, Massachusetts |
| Death Place: | Waterbury, Connecticut |
| Debutleague: | MLB |
| Debutdate: | September 3 |
| Debutyear: | 1885 |
| Debutteam: | Baltimore Orioles |
| Finalleague: | MLB |
| Finaldate: | September 30 |
| Finalyear: | 1885 |
| Finalteam: | Baltimore Orioles |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .129 |
| Stat2label: | Hits |
| Stat2value: | 4 |
| Stat3label: | At bats |
| Stat3value: | 31 |
| Teams: |
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Eugene A. Derby (February 3, 1860 – February 13, 1917) was a baseball catcher, who appeared in ten games for the 1885 Baltimore Orioles of the American Association. He continued to play in the minor leagues through 1891.