| Pietroso | |
| Commune Status: | Commune |
| Arrondissement: | Corte |
| Canton: | Fiumorbo-Castello |
| Insee: | 2B229 |
| Postal Code: | 20242 |
| Mayor: | François Martinetti[1] |
| Term: | 2023 - 2026 |
| Coordinates: | 42.1575°N 9.2708°W |
| Elevation M: | 637 |
| Elevation Min M: | 70 |
| Elevation Max M: | 1389 |
| Area Km2: | 25.76 |
Pietroso (in French pronounced as /pjɛtʁozo/; Corsican: U Petrosu) is a commune in the Haute-Corse department of France on the island of Corsica.