| Petorca Province | |
| Native Name: | Provincia de Petorca |
| Native Name Lang: | es |
| Settlement Type: | Province |
| Mapsize: | 175px |
| Mat Alt: | Location in the Valparaíso Region |
| Pushpin Map: | Chile |
| Pushpin Mapsize: | 175 |
| Pushpin Map Caption: | Location in Chile |
| Coordinates: | -32.3667°N -77°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Chile |
| Subdivision Type1: | Region |
| Parts Type: | Communes |
| Parts Style: | coll |
| Parts: | List of 5: |
| P1: | La Ligua |
| P2: | Cabildo |
| P3: | Zapallar |
| P4: | Papudo |
| P5: | Petorca |
| Seat Type: | Capital |
| Seat: | La Ligua |
| Government Type: | Provincial |
| Leader Party: | Independent |
| Leader Title: | Presidential Provincial Delegate |
| Leader Name: | Luis Soto Pérez |
| Unit Pref: | Metric |
| Area Footnotes: | [1] |
| Area Total Km2: | 4588.9 |
| Area Rank: | 1 |
| Population Total: | 72286 |
| Population As Of: | 2012 Census |
| Population Rank: | 7 |
| Population Density Km2: | auto |
| Population Blank1 Title: | Urban |
| Population Blank1: | 50,289 |
| Population Blank2 Title: | Rural |
| Population Blank2: | 20,321 |
| Demographics Type1: | Sex |
| Demographics1 Title1: | Men |
| Demographics1 Info1: | 35,647 |
| Demographics1 Title2: | Women |
| Demographics1 Info2: | 34,963 |
| Timezone: | CLT[2] |
| Utc Offset: | -4 |
| Timezone Dst: | CLST[3] |
| Utc Offset Dst: | -3 |
| Area Code: | 56 + |
| Website: | Delegation of Petorca |
Petorca Province (Spanish; Castilian: Provincia de Petorca) is one of eight provinces of the central Chilean region of Valparaíso (V). Its capital is the city of La Ligua.
As a province, Petorca is a second-level administrative division, governed by a provincial delegate who is appointed by the president.
The province comprises five communes (Spanish: comunas), each governed by a municipality consisting of an alcalde and municipal council:
The province spans an area of 4588.9sqkm, the largest in the Valparaíso Region. According to the 2002 census, Petorca is the second least populous province in the region under Isla de Pascua (Easter Island) with a population of 70,610. At that time, there were 50,289 people living in urban areas, 20,321 people living in rural areas, 35,647 men and 34,963 women.[1]