- CALS stands for College of Agriculture and Life Sciences (Cornell University)
- CALS stands for Chicano and Latino Studies (California)
- CALS stands for Continuous Acquisition and Life-Cycle Support
- CALS stands for Central Arkansas Library System (Little Rock, AR)
- CALS stands for Centre for Applied Legal Studies (South Africa)
- CALS stands for Commerce At Light Speed
- CALS stands for Computer-Aided Logistics Support (original name for Continuous Acquisition and Life-cycle Support)
- CALS stands for Comprehensive Advanced Life Support (various locations)
- CALS stands for Combat Assault Landing Strip (US DoD)
- CALS stands for California Lichen Society (Fairfax, California)
- CALS stands for Canadian Association for Leisure Studies
- CALS stands for Computer-Aided Acquisition & Logistics Support
- CALS stands for Computer-Aided Lifecycle Support
- CALS stands for Central Area Loop Study (Covington, Kentucky)
- CALS stands for Contingency Airfield Lighting System
- CALS stands for Committee for Ammunition Logistics Support
- CALS stands for Cloud and Aerosol Lidar System
- CALS stands for Comprehensive Analytical Laboratory Services
- CALS stands for Communications Area Local Station
CALS