| Castillon (Canton of Arthez-de-Béarn) | |
| Commune Status: | Commune |
| Image Coat Of Arms: | EscutCastilhonBearn.svg |
| Arrondissement: | Pau |
| Canton: | Artix et Pays de Soubestre |
| Insee: | 64181 |
| Postal Code: | 64370 |
| Mayor: | Gilles Mardelle[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Lacq-Orthez |
| Coordinates: | 43.4664°N -0.575°W |
| Elevation M: | 132 |
| Elevation Min M: | 122 |
| Elevation Max M: | 231 |
| Area Km2: | 6.71 |
Castillon (pronounced as /fr/, officially Castillon (Canton of Arthez-de-Béarn), sometimes referred to as Castillon-d'Arthez) is a commune in the Pyrénées-Atlantiques department in south-western France.