CAS

• Catgut Acoustical Society
• Central Administration for Statistics
• Central Authentication Service
• Centre for Atmospheric Sciences
• Channel Associated Signaling
• Channel-Associated Signalling
• Chemical Abstract Service
• Chemical Abstract System
• Chemical Abstracts Service
• Chief of the Air Staff
• Chinese Academy of Sciences
• Cinema Audio Society
• Classic Arts Showcase
• Club Alpino Sammarinese
• Coatings, Adhesives, Specialities
• Code Access Security
• College of Applied Science
• Collision Avoidance Sonar
• Collision Avoidance System
• Column Address Strobe
• Complex Adaptive System
• Computer Aided Selling
• Computer Assisted Surgery
• Condition Assessment Scheme
• Conditional Access System
• Confederated American States
• Content Addressed Storage
• Content Adressed Storage
• Continental Automotive Systems
• Control Augmentation System
• Controlled Atmosphere Storage
• Country Assistance Strategy
• Court of Arbitration for Sport
• Courts of Arbitration for Sports
• Covert Action Staff
• Creativity-Action-Service
• Crew Alerting System
• Cylindrical Array Sonar
• Czech Astronomical Society