| Birth Date: | 1964 2, df=yes |
| Birth Place: | Heerhugowaard, the Netherlands |
| Height: | 1.74m (05.71feet) |
| Weight: | 600NaN0 |
| Sport: | Sprint, hurdling |
| Club: | Atletiekvereniging Hera |
| Show-Medals: | yes |
Margaretha Maria "Gretha" Tromp (born 21 February 1964) is a retired Dutch sprinter and hurdler. She competed at the 1988 Summer Olympics in the 100 m hurdles, 400 m hurdles and 4×100 metres relay, but failed to reach the final in any event.[1] She won two medals at the 1991 Summer Universiade.