| Saint-Martin-de-Nigelles | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Saint-Martin-de-Nigelles.svg |
| Arrondissement: | Chartres |
| Canton: | Épernon |
| Insee: | 28352 |
| Postal Code: | 28130 |
| Mayor: | Thierry Cordelle[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | Portes Euréliennes d'Île-de-France |
| Coordinates: | 48.6114°N 1.6117°W |
| Elevation M: | 108 |
| Elevation Min M: | 100 |
| Elevation Max M: | 159 |
| Area Km2: | 12.31 |
Saint-Martin-de-Nigelles (in French pronounced as /sɛ̃ maʁtɛ̃ də niʒɛl/) is a commune in the Eure-et-Loir department in northern France.