| Saint-Marcellin-lès-Vaison | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Marcellin-lès-Vaison (Vaucluse).svg |
| Arrondissement: | Carpentras |
| Canton: | Vaison-la-Romaine |
| Insee: | 84111 |
| Postal Code: | 84110 |
| Mayor: | Gérard Raineri[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Vaison Ventoux |
| Coordinates: | 44.2311°N 5.0992°W |
| Elevation M: | 287 |
| Elevation Min M: | 200 |
| Elevation Max M: | 444 |
| Area Km2: | 3.56 |
Saint-Marcellin-lès-Vaison (pronounced as /fr/, literally Saint-Marcellin near Vaison; Provençal: Sant Marcelin de Vaison) is a commune in the Vaucluse department in the Provence-Alpes-Côte d'Azur region in southeastern France.