Gregory Mangin
| Full name | Gregory Sylvester Mangin |
|---|---|
| Country (sports) | United States |
| Born | November 1, 1907 Newark, New Jersey |
| Died | October 27, 1979 (aged 71) Newark, New Jersey |
| Plays | Right-handed (one-handed backhand) |
| Singles | |
| Career record | 114-68 |
| Career titles | 18 |
| Highest ranking | No. 5 (1933 U.S. ranking) |
| Grand Slam singles results | |
| French Open | QF (1933) |
| Wimbledon | QF (1930) |
| US Open | QF (1928, 1930, 1933, 1935, 1936) |
| Doubles | |
| Grand Slam doubles results | |
| Wimbledon | QF (1931, 1932) |
| US Open | F (1931) |
| Mixed doubles | |
| Grand Slam mixed doubles results | |
| Wimbledon | 4R (1930, 1932) |
Gregory Sylvester Mangin (November 1, 1907 – October 27, 1979) was an American tennis player and Wall Street broker. He won four U.S. Indoor singles titles in the 1930s.