| Martres-de-Rivière | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Martres-de-Rivière (Haute-Garonne).svg |
| Arrondissement: | Saint-Gaudens |
| Canton: | Bagnères-de-Luchon |
| Insee: | 31323 |
| Postal Code: | 31210 |
| Mayor: | Jean-Paul Salvatico[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pyrénées Haut-Garonnaises |
| Coordinates: | 43.08°N 0.6422°W |
| Elevation Min M: | 391 |
| Elevation Max M: | 569 |
| Area Km2: | 3.59 |
Martres-de-Rivière (in French pronounced as /maʁtʁ də ʁivjɛʁ/; Occitan (post 1500);: Martras de Ribèra) is a commune in the Haute-Garonne department in southwestern France.