| Saint-Frajou | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Paul-sur-Save (Haute-Garonne).svg |
| Arrondissement: | Saint-Gaudens |
| Canton: | Cazères |
| Insee: | 31482 |
| Postal Code: | 31230 |
| Mayor: | Alain Davezac[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.3347°N 0.85°W |
| Elevation M: | 500 |
| Elevation Min M: | 222 |
| Elevation Max M: | 350 |
| Area Km2: | 16.61 |
Saint-Frajou (pronounced as /fr/; oc|Sent Frajó) is a commune in the Haute-Garonne department in southwestern France. The 20th-century historian René Souriac (born 1941) is from Saint-Frajou.