| Serres-Castet | |
| Commune Status: | Commune |
| Arrondissement: | Pau |
| Canton: | Terres des Luys et Coteaux du Vic-Bilh |
| Insee: | 64519 |
| Postal Code: | 64121 |
| Mayor: | Jean-Yves Courreges[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Luys en Béarn |
| Coordinates: | 43.3872°N -0.3536°W |
| Elevation M: | 236 |
| Elevation Min M: | 177 |
| Elevation Max M: | 288 |
| Area Km2: | 13.71 |
Serres-Castet (in French pronounced as /sɛʁ kastɛ/; Occitan (post 1500);: Sèrras Castèth) is a commune in the Pyrénées-Atlantiques department in south-western France.