| Colliano | |
| Official Name: | Comune di Colliano |
| Coordinates: | 40.7333°N 32°W |
| Province: | (SA) |
| Frazioni: | Bagni, Bisigliano, Collianello, Macchia Grande, Macchia Piccola, San Vittore, Sasso, Valle di Raio |
| Area Total Km2: | 54 |
| Population Footnotes: | [1] |
| Population Total: | 3813 |
| Population As Of: | 1 April 2009 |
| Population Demonym: | Collianesi |
| Saint: | St. Leo X |
| Day: | 20 July |
| Postal Code: | 84020 |
| Area Code: | 0828 |
| Istat: | 065043 |
Colliano (Campanian: Neapolitan: Cuglian) is a town and comune in the province of Salerno in the Campania region of south-western Italy. The name is likely related to the Italian word, collinare, which means hill top.
The municipality borders with Buccino, Contursi Terme, Laviano, Muro Lucano (PZ, Basilicata region), Oliveto Citra, Palomonte, San Gregorio Magno and Valva.