| Saint-Martin-d'Oydes | |
| Commune Status: | Commune |
| Arrondissement: | Pamiers |
| Canton: | Pamiers-1 |
| Insee: | 09270 |
| Postal Code: | 09100 |
| Mayor: | Geneviève Leleu[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.1711°N 1.4969°W |
| Elevation M: | 232 |
| Elevation Min M: | 259 |
| Elevation Max M: | 381 |
| Area Km2: | 11.64 |
Saint-Martin-d'Oydes (in French pronounced as /sɛ̃ maʁtɛ̃ dɔjd/; Languedocien: Sent Martin d'Òidas) is a commune in the Ariège department in southwestern France.
Inhabitants of Saint-Martin-d'Oydes are called Saint-Martinains.