| Cazaubon | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Cazaubon (Gers).svg |
| Arrondissement: | Condom |
| Canton: | Grand-Bas-Armagnac |
| Insee: | 32096 |
| Postal Code: | 32150 |
| Mayor: | Isabelle Tintané[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Grand-Armagnac |
| Coordinates: | 43.9356°N -0.0706°W |
| Elevation M: | 124 |
| Elevation Min M: | 92 |
| Elevation Max M: | 183 |
| Area Km2: | 55.64 |
Cazaubon (in French pronounced as /kazobɔ̃/; Gascon: Casaubon) is a commune in the Gers department of southwestern France.
Besides the town of Cazaubon itself, the commune includes the adjacent spa town of Barbotan-les-Thermes.