| Abbreviation | Definition |
|---|---|
| CAPSE | Civil Aviation Passenger Service Evaluation |
| CAPT | Captain |
| CAR | Civil Aviation Requirements or Regulation |
| CARAG | Carriage |
| CARE | Cooperative for Assistance and Relief Everywhere |
| CARERI | China (AVIC) Aeronautical Radio Electronics Research Institute |
| CAS | Calibrated Air Speed |
| CAS | Continuous Analysis and Surveillance |
| CAS | Cost Analysis Sheet |
| CASA | Civil Aviation Safety Authority |
| CASB | Canadian Aviation Safety Board |
| CASB | Civil Aviation Safety Bureau |
| CASE | Coordinating Agency For Supplier Evaluation |
| CASID | Committee for Aviation and Space Industry Development |
| CASK | Cost of Available Seat-Kilometer |
| CASL | China Aircraft Services Limited |
| CASL | Commercial Aircraft Sales and Leasing |
| CASO | Chief Aviation Safety Officer |
| CASO | Civil Aviation Safety Officer |
| CASP | California Aviation System Plan |