Castelvetrano
| Castelvetrano | |
|---|---|
| Città di Castelvetrano | |
| Mother Church | |
| Castelvetrano within the Province of Trapani | |
| Location of Castelvetrano | |
| Coordinates: 37°41′0″N 12°47′35″E / 37.68333°N 12.79306°E | |
| Country | Italy | 
| Region | Sicily | 
| Province | Trapani (TP) | 
| Frazioni | Marinella (Selinunte), Triscina | 
| Government | |
| • Mayor | Enzo Alfano | 
| Area | |
|  • Total | 209.76 km2 (80.99 sq mi) | 
| Elevation | 187 m (614 ft) | 
| Population  (28 February 2017) | |
|  • Total | 31,680 | 
| • Density | 150/km2 (390/sq mi) | 
| Demonym | Castelvetranesi | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Postal code | 91022 | 
| Dialing code | 0924 | 
| Patron saint | St. John the Baptist | 
| Saint day | 24 June | 
| Website | Official website | 
Castelvetrano (Sicilian: Castiḍḍuvitranu) is a town and comune in the province of Trapani, Sicily, southern Italy. The archeological site of Selinunte is located within the municipal territory.
The municipality borders with Campobello di Mazara, Mazara del Vallo, Menfi, Montevago, Partanna, Salemi and Santa Ninfa.