| Castetner | |
| Commune Status: | Commune |
| Arrondissement: | Pau |
| Canton: | Le Cœur de Béarn |
| Insee: | 64179 |
| Postal Code: | 64300 |
| Mayor: | Nadia Grammontin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Lacq-Orthez |
| Coordinates: | 43.4453°N -0.7456°W |
| Elevation M: | 74 |
| Elevation Min M: | 69 |
| Elevation Max M: | 215 |
| Area Km2: | 6.56 |
Castetner is a commune in the Pyrénées-Atlantiques department in southwestern France.