| Saint-Gelven | |
| Native Name: | Sant-Jelven |
| Coordinates: | 48.2272°N -3.0961°W |
| Insee: | 22290 |
| Postal Code: | 22570 |
| Arrondissement: | Guingamp |
| Canton: | Rostrenen |
| Commune: | Bon Repos sur Blavet |
| Elevation Min M: | 120 |
| Elevation Max M: | 281 |
| Area Km2: | 17.48 |
| Population: | 322 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Saint-Gelven (in French pronounced as /sɛ̃ ʒɛlvɛ̃/; Breton: Sant-Jelven) is a former commune in the Côtes-d'Armor department of Brittany in northwestern France.
On 1 January 2017, it was merged into the new commune Bon Repos sur Blavet.[2]
Inhabitants of Saint-Gelven are called saintgelvenois in French.