- ZAC stands for Zacatecas (Estado de México)
- ZAC stands for Zacapa (Guatemala, territorial division)
- ZAC stands for Zone d’Aménagement Concerté (French: Integrated Development Zone)
- ZAC stands for Zion Adventure Company (Utah)
- ZAC stands for Zamil Air Conditioners (Saudi Arabia)
- ZAC stands for Zone for Autistic Children
- ZAC stands for Zojirushi America Corporation
- ZAC stands for Zwolsche Athletische Club (soccer team, Holland)
- ZAC stands for Zero Administration Client (Network Associates)
- ZAC stands for Zero Accident Culture (workplace safety program)
- ZAC stands for Zone Advisory Committee (various locations)
- ZAC stands for Zone d’Activité Commerciale
- ZAC stands for Zero Auto-Correlation
- ZAC stands for Zoar Activity Center
ZAC