Rosso
| Rosso روصو | |
|---|---|
| Commune and town | |
| Rosso Town Centre | |
| Coordinates: 16°30′46″N 15°48′18″W / 16.51278°N 15.80500°W | |
| Country | Mauritania | 
| Region | Trarza | 
| Government | |
| • Mayor | Bamba Sidi Daramane | 
| Elevation | 6 m (20 ft) | 
| Population  (2013 census) | |
| 51,026 | |
| • Urban | 33,518 | 
Rosso is the major city of south-western Mauritania and capital of Trarza region. It is situated on the Senegal River at the head of the river zone allowing year-round navigation.
The town is 204 km south of the capital Nouakchott.