| Riolas | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Gaudens |
| Canton: | Cazères |
| Insee: | 31456 |
| Postal Code: | 31230 |
| Mayor: | Michel Duprat[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.35°N 0.9175°W |
| Elevation M: | 340 |
| Elevation Min M: | 239 |
| Elevation Max M: | 352 |
| Area Km2: | 2.86 |
Riolas is a commune in the Haute-Garonne department in southwestern France.