| Marseillette | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Marseillette (Aude).svg |
| Arrondissement: | Carcassonne |
| Canton: | La Montagne d'Alaric |
| Insee: | 11220 |
| Postal Code: | 11800 |
| Mayor: | Bernadette Duclos[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Carcassonne Agglo |
| Coordinates: | 43.2039°N 2.5428°W |
| Elevation M: | 78 |
| Elevation Min M: | 52 |
| Elevation Max M: | 118 |
| Area Km2: | 11.17 |
Marseillette (in French pronounced as /maʁsɛjɛt/; Occitan (post 1500);: Marselheta) is a commune in the Aude department in southern France.