Airlines — C
- SRJC Air Jet Airlines
- TIPC and M Aviation
- OROC N Air
- RMUC.S.P.
- RWGC&M Airways
- CBRCabair College of Air Training
- CBICABI
- CVECabo Verde Express
- CWDCaernarfon Airworld
- CPICAI
- CCECairo Air Transport Company
- ICLCAL Cargo Air Lines
- CGCCal Gulf Aviation
- REZCal-West Aviation
- CSLCalifornia Air Shuttle
- CWSCalifornia Western
- CLICalima Aviacion
- CAVCalm Air
- CMRCAM Air Management
- CAMCamai Air
- KHMCambodia Airlines
- UYCCameroon Airlines
- HSOCampania Helicopteros De Transporte
- PILCanada Jet Charters
- CDNCanadian Airlines
- CTGCanadian Coast Guard
- HIACanadian Eagle Aviation
- CFCCanadian Forces
- BZDCanadian Global Air Ambulance
- CDNCanadian Helicopters
- TKRCanadian Interagency Forest Fire Centre
- YCPCanadian National Airways
- XNCCanadian National Telecommunications
- MPECanadian North
- CDRCanadian Regional Airlines
- CWHCanadian Warplane Heritage Museum
- CWACanadian Western Airlines
- CNNCanadian World
- CWWCanair
- CNFCanaryfly
- CUICancun Air
- CJACanJet
- CAPCanXplorer
- CA1CanXpress
- KAPCape Air
- CTOCape Air Transport
- SEMCape Central Airways
- CMYCape Smythe Air
- CPXCapital Air Service
- CPDCapital Airlines
- NCPCapital Airlines Limited
- CCICapital Cargo International Airlines
- CCQCapital City Air Carriers
- EGLCapital Trading Aviation
- CEXCapitol Air Express
- CWZCapitol Wings Airline
- VANCaravan Air
- CWNCardiff Wales Flying Club
- FVACardinal/Air Virginia
- GOLCardolaar
- CDICards Air Services
- CFHCare Flight
- CDMCarga Aerea Dominicana
- ESTCarga Express Internacional
- GGCCargo 360
- MCXCargo Express
- CRVCargo Ivoire
- CLMCargo Link (Caribbean)
- CGPCargo Plus Aviation
- CTWCargo Three
- CRGCargoitalia
- CJTCargojet Airways
- CLXCargolux
- CGMCargoman
- DELCarib Aviation
- BCBCarib Express
- CBCCaribair
- DCCCaribbean Air Cargo
- CLTCaribbean Air Transport
- BWACaribbean Airlines
- IQQCaribbean Airways
- TLCCaribbean Express
- GFICaribbean Star Airlines
- ZYZCaribbean Wings
- CRTCaribintair
- CCBCARICOM AIRWAYS (BARBADOS) INC.
- CVGCarill Aviation
- KRPCarpatair
- SMWCarpatair Flight Training
- CRRCarranza
- ULSCarroll Air Service
- CMTCasement Aviation
- CSOCasino Airline
- CSPCasper Air Service
- CPNCaspian Airlines
- CSJCastle Aviation
- CAZCat Aviation
- CTZCATA L
- CBTCatalina Flying Boats
- TEXCatex