| Saint-Jean-Lasseille | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Jean-Lasseille 66.svg |
| Native Name: | Sant Joan la Cella |
| Arrondissement: | Céret |
| Canton: | Les Aspres |
| Insee: | 66177 |
| Postal Code: | 66300 |
| Mayor: | Philippe Xancho[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Aspres |
| Coordinates: | 42.5819°N 2.8667°W |
| Elevation M: | 75 |
| Elevation Min M: | 66 |
| Elevation Max M: | 103 |
| Area Km2: | 2.89 |
Saint-Jean-Lasseille (in French pronounced as /sɛ̃ ʒɑ̃ lasɛj/; Catalan; Valencian: Sant Joan la Cella) is a commune in the Pyrénées-Orientales department in southern France.
Saint-Jean-Lasseille is located in the canton of Les Aspres and in the arrondissement of Perpignan.