| Ladevèze-Rivière | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Ladevèze (Gers).svg |
| Arrondissement: | Mirande |
| Canton: | Pardiac-Rivière-Basse |
| Insee: | 32174 |
| Postal Code: | 32230 |
| Mayor: | Cyril Cotonat[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bastides et vallons du Gers |
| Coordinates: | 43.5528°N 0.0744°W |
| Elevation M: | 150 |
| Elevation Min M: | 134 |
| Elevation Max M: | 220 |
| Area Km2: | 13.54 |
Ladevèze-Rivière (in French pronounced as /ladvɛz ʁivjɛʁ/; Occitan (post 1500);: La Devesa Ribèra) is a commune in the Gers department in southwestern France.