| Cabas-Loumassès | |
| Commune Status: | Commune |
| Arrondissement: | Mirande |
| Canton: | Astarac-Gimone |
| Insee: | 32067 |
| Postal Code: | 32140 |
| Mayor: | Henri Soumeillan[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val de Gers |
| Coordinates: | 43.3547°N 0.5997°W |
| Elevation M: | 304 |
| Elevation Min M: | 245 |
| Elevation Max M: | 312 |
| Area Km2: | 4.11 |
Cabas-Loumassès is a commune in the Gers department in southwestern France.