| Saint-Marcel-sur-Aude | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Marcel-sur-Aude (Aude).svg |
| Arrondissement: | Narbonne |
| Canton: | Le Sud-Minervois |
| Insee: | 11353 |
| Postal Code: | 11120 |
| Mayor: | Frederic Henri Nunez[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | Grand Narbonne |
| Coordinates: | 43.2447°N 2.9233°W |
| Elevation Min M: | 9 |
| Elevation Max M: | 31 |
| Area Km2: | 8.37 |
Saint-Marcel-sur-Aude (in French pronounced as /sɛ̃ maʁsɛl syʁ od/, literally Saint-Marcel on Aude; Occitan (post 1500);: Sant Marcèl) is a commune in the Aude department in southern France.