| Type: | commune |
| County: | Prahova |
| Tinosu | |
| Leader Name: | Iulian-Gabriel Andrei |
| Leader Party: | PNL |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 44.8167°N 27°W |
| Elevation: | 113 |
| Area Total: | 18.1 |
| Population Total: | auto |
| Postal Code: | 107610 |
Tinosu is a commune in Prahova County, Muntenia, Romania. It is composed of three villages: Predești, Pisculești, and Tinosu.
The ruins of a Dacian fortified town is located near the villages of Tinosu and Pisculești.