| Spencer Pumpelly | |
| Position: | Pitcher |
| Bats: | Unknown |
| Throws: | Right |
| Birth Date: | 11 April 1893 |
| Birth Place: | Owego, New York, U.S. |
| Death Place: | Sayre, Pennsylvania, U.S. |
| Debutleague: | MLB |
| Debutdate: | July 11 |
| Debutyear: | 1925 |
| Debutteam: | Washington Senators |
| Finalleague: | MLB |
| Finaldate: | July 11 |
| Finalyear: | 1925 |
| Finalteam: | Washington Senators |
| Statleague: | MLB |
| Stat1label: | Games pitched |
| Stat1value: | 1 |
| Stat2label: | Innings pitched |
| Stat2value: | 1.0 |
| Stat3label: | Batters faced |
| Stat3value: | 4 |
| Teams: | |
Spencer Armstrong Pumpelly (April 11, 1893 – December 5, 1973) was an American Major League Baseball pitcher. Pumpelly played in one game for the Washington Senators against the St. Louis Browns on July 11, . He entered in the bottom of the 6th inning, with the Senators trailing the Browns 2–9, and allowed a home run to Marty McManus, walked Baby Doll Jacobson, induced a pop-out from Pinky Hargrave, and induced a 6-4 double-play from Gene Robertson to end the inning.[1] Pumpelly played college baseball at Yale University until he was suspended from the school's athletics program due to questions about his amateur status.[2]