San Joaquin may refer to:
Places
Central America
- San Joaquin, Corozal, a village in Belize
- San Joaquín de Flores, a town in Costa Rica
North America
California, United States
- The San Joaquin River
- The San Joaquin Valley, the southern part of the central valley of California and the valley of the river
- San Joaquin County, California, named for the river
- San Joaquin, California, a town in Fresno County, named for the river
- San Joaquin City, California, in San Joaquin County, a former port on the river
- Rancho San Joaquin, a Mexican land grant in Orange County
- San Joaquin Hills, in Orange County, named for the rancho
Mexico
South America
- San Joaquín, Bolivia, a town
- San Joaquín, Chile, part of the Greater Santiago Metropolitan Region
- San Joaquín, Ecuador, a town
- San Joaquín, Carabobo, a city in Venezuela
Other places
- San Joaquin (Equatorial Guinea), a volcano in Africa
- San Joaquin, Iloilo, a municipality in the Philippines
Other uses
- Saint Joachim, the father of Mary, mother of Jesus
- San Joaquin (soil), the state soil of California
- San Joaquin kit fox, an endangered subspecies from Central California
- San Joaquin (train), a passenger train service in Central California
- Episcopal Diocese of San Joaquin, a church district in Central California
- Anglican Diocese of San Joaquin, a breakaway group from that diocese