| Tirso | |
|---|---|
| Origin | Punta Pianedda (Buddusò) plateau |
| Mouth | Gulf of Oristano |
| Basin countries | Italy |
| Length | 152 km |
| Source elevation | 985 m |
| Mouth elevation | 0 m |
| Avg. discharge | 4.28 m³/s |
| Basin area | 3,375 km² |
The Tirso (Sardinian: Tirsu) is a 152 km Italian river, the most important of the island Sardinia. It rises from the plateau of Buddusò, on the slopes of the Punta Pianedda at an elevation of 985 m and crosses the island from east to west, entering the sea in the Gulf of Oristano.