| Saint-Jean-Trolimon | |
| Native Name: | Sant-Yann-Drolimon |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Jean-Trolimon (Finistère).svg |
| Coordinates: | 47.8669°N -4.2794°W |
| Elevation Min M: | 0 |
| Elevation Max M: | 56 |
| Insee: | 29252 |
| Postal Code: | 29120 |
| Arrondissement: | Quimper |
| Canton: | Plonéour-Lanvern |
| Mayor: | Jean-Edern Aubree[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays Bigouden Sud |
| Area Km2: | 14.68 |
Saint-Jean-Trolimon (in French pronounced as /sɛ̃ ʒɑ̃ tʁɔlimɔ̃/;) is a commune in the Finistère department of Brittany in north-western France.
Inhabitants of Saint-Jean-Trolimon are called in French Trolimonais.
The municipality launched a linguistic plan concerning the Breton language through Ya d'ar brezhoneg on 17 September 2004.