| Montfa | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Girons |
| Canton: | Arize-Lèze |
| Insee: | 09205 |
| Postal Code: | 09350 |
| Mayor: | Diane Gilliot[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.1006°N 1.2844°W |
| Elevation M: | 430 |
| Elevation Min M: | 313 |
| Elevation Max M: | 571 |
| Area Km2: | 8.54 |
Montfa (pronounced as /fr/; oc|Montfan) is a commune in the Ariège department in southwestern France.