CASC or Casc may refer to:
- Computerized Aircraft Simulation Centre - CASC - A flight training centre for Royal Canadian Air Cadet programs
- California Association of Student Councils
- Cambodian Acid Survivors Charity
- Cardington Artificial Slalom Course
- Certificate Authority Security Council
- China Aerospace Science and Technology Corporation
- CADE ATP System Competition
- Coalition Agglomérée des Sciencescomiens de la capitale
- Canadian Automobile Sport Clubs
- Carl Albert State College
- Community Amateur Sports Club - a UK tax status