| Rieumajou | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Rieumajou (Haute-Garonne).svg |
| Arrondissement: | Toulouse |
| Canton: | Revel |
| Insee: | 31453 |
| Postal Code: | 31290 |
| Mayor: | Valéry Barrau[1] |
| Term: | 2022 - 2026 |
| Coordinates: | 43.4161°N 1.7911°W |
| Elevation M: | 245 |
| Elevation Min M: | 205 |
| Elevation Max M: | 282 |
| Area Km2: | 3.77 |
Rieumajou (pronounced as /fr/; oc|Riumajor) is a commune in the Haute-Garonne department in southwestern France.