| Serralongue | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Serralongue 66.svg |
| Arrondissement: | Céret |
| Canton: | Le Canigou |
| Insee: | 66194 |
| Postal Code: | 66230 |
| Mayor: | Philippe Juanola[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Haut Vallespir |
| Coordinates: | 42.3983°N 2.5564°W |
| Elevation M: | 714 |
| Elevation Min M: | 478 |
| Elevation Max M: | 1407 |
| Area Km2: | 23.04 |
Serralongue (in French pronounced as /sɛʁalɔ̃ɡ/; Catalan; Valencian: Serrallonga) is a commune in the Pyrénées-Orientales department in southern France.
Serralongue is located in the canton of Le Canigou and in the arrondissement of Céret.