| Saint-Martin-d'Arc | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Jean-de-Maurienne |
| Canton: | Modane |
| Insee: | 73256 |
| Postal Code: | 73140 |
| Mayor: | Luc Ollier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Maurienne-Galibier |
| Coordinates: | 45.2133°N 6.4686°W |
| Elevation Min M: | 695 |
| Elevation Max M: | 1560 |
| Area Km2: | 4.93 |
Saint-Martin-d'Arc is a commune in the Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.