| Mercogliano | |
| Official Name: | Città di Mercogliano |
| Coordinates: | 40.9258°N 14.7428°W |
| Region: | Campania |
| Province: | Avellino (AV) |
| Frazioni: | Montevergine, Torelli, Torrette |
| Mayor: | Vittorio D'Alessio |
| Area Total Km2: | 19.76 |
| Population Footnotes: | [1] |
| Population Total: | 11567 |
| Population As Of: | 31 March 2022 |
| Population Demonym: | Mercoglianesi |
| Elevation M: | 550 |
| Saint: | San Modestino |
| Day: | February 14 |
| Postal Code: | 83013 |
| Area Code: | 0825 |
Mercogliano is an Italian town and comune in the province of Avellino, Campania, southern Italy.
Mercogliano is a hill town located near the western suburb of Avellino and below the mount Partenio (or Montevergine). The municipality borders with Avellino, Monteforte Irpino, Mugnano del Cardinale, Ospedaletto d'Alpinolo, Quadrelle and Summonte.
It counts three hamlets (frazioni):
located near the summit of mount Partenio and home of the homonym sanctuary, is linked to Mercogliano by the Montevergine funicular.
it is a village located on the road between Torrette and Mercogliano.
located on a plain next to Avellino, it is the commercial hub of the municipality. The exit "Avellino Ovest" (Av. West) of the A16 motorway serves the locality.