PACA or Paca may refer to:
- Paca, either of two large rodent species
- Paca, a shortening of the Spanish name Francisca
- Perishable Agricultural Commodities Act of 1930 (US)
- People
- William Paca, signer of the U.S. Declaration of Independence
- Paca Blanco, Spanish environmentalist
- Paca Navas, Honduran journalist
- Paca Thomas, US entertainment media producer
- Places
- Pača, a village in Slovakia
- Paca, Tibet, a village
- Paca District, Jauja, Peru
- Paca (mountain), Peru
- La Paca, Murcia, Spain, a village
- Lake Paca, Peru
- Provence-Alpes-Côte d'Azur, a region of France
- Schools
- Pan American Christian Academy, São Paulo, Brazil
- Portslade Aldridge Community Academy, England