| Sédeilhac | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Gaudens |
| Canton: | Saint-Gaudens |
| Insee: | 31539 |
| Postal Code: | 31580 |
| Mayor: | Philippe Casteran[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.1539°N 0.5564°W |
| Elevation M: | 420 |
| Elevation Min M: | 397 |
| Elevation Max M: | 553 |
| Area Km2: | 6.16 |
Sédeilhac (in French pronounced as /sedɛjak/; Occitan (post 1500);: Sedelhac) is a commune in the Haute-Garonne department in southwestern France.