- Columbus Air Force BaseIdent: KCBMCountry: United States
- Columbus AirportIdent: KCSGCountry: United States
- Columbus Municipal AirportIdent: KBAKCountry: United States
- Columbus Municipal AirportIdent: KOLUCountry: United States
- Comandante Ariston Pessoa AirportIdent: SBJECountry: Brazil
- Comandante Espora AirportIdent: SAZBCountry: Argentina
- Comandante FAP German Arias Graziani AirportIdent: SPHZCountry: Peru
- Comandante Gustavo Kraemer AirportIdent: SBBGCountry: Brazil
- Comiso AirportIdent: LICBCountry: Italy
- Commander in Chief of FALINTIL, Kay Rala Xanana Gusmão, International AirportIdent: WPDBCountry: Timor-Leste
- Comodoro D.R. Salomón AirportIdent: SAMMCountry: Argentina
- Comodoro Pedro Zanni AirportIdent: SAZPCountry: Argentina
- Comodoro Pierrestegui AirportIdent: SAACCountry: Argentina
- Comox Valley International Airport / CFB ComoxIdent: CYQQCountry: Canada
- Con Dao AirportIdent: VVCSCountry: Vietnam
- Conceição do Araguaia AirportIdent: SBAACountry: Brazil
- Concord Municipal AirportIdent: KCONCountry: United States
- Concord-Padgett Regional AirportIdent: KJQFCountry: United States
- Concordia SkywayIdent: AT03Country: Antarctica
- Congo Town AirportIdent: MYAKCountry: Bahamas
- Conroe-North Houston Regional AirportIdent: KCXOCountry: United States
- Coober Pedy AirportIdent: YCBPCountry: Australia
- Cooktown AirportIdent: YCKNCountry: Australia
- Cooma Snowy Mountains AirportIdent: YCOMCountry: Australia
- Coonabarabran AirportIdent: YCBBCountry: Australia
- Coonamble AirportIdent: YCNMCountry: Australia
- Cootamundra AirportIdent: YCTMCountry: Australia
- Copenhagen Roskilde AirportIdent: EKRKCountry: Denmark
- Coral Harbour AirportIdent: CYZSCountry: Canada
- Cornwall Airport NewquayIdent: EGHQCountry: United Kingdom
- Cornwall Regional AirportIdent: CYCCCountry: Canada
- Coronel Adalberto Mendes da Silva AirportIdent: SBCACountry: Brazil
- Coronel Altino Machado AirportIdent: SBGVCountry: Brazil
- Coronel E Carvajal AirportIdent: SEMCCountry: Ecuador
- Coronel FAP Carlos Ciriani Santa Rosa International AirportIdent: SPTNCountry: Peru
- Coronel Felipe Varela International AirportIdent: SANCCountry: Argentina
- Coronel Oviedo National AirportIdent: PY-0002Country: Paraguay
- Corowa AirportIdent: YCORCountry: Australia
- Corozal AirportIdent: BZ-CZHCountry: Belize
- Corpus Christi International AirportIdent: KCRPCountry: United States
- Corrientes AirportIdent: SARCCountry: Argentina
- Corryong AirportIdent: YCRGCountry: Australia
- Cortez Municipal AirportIdent: KCEZCountry: United States
- Corumbá International AirportIdent: SBCRCountry: Brazil
- Corvallis Municipal AirportIdent: KCVOCountry: United States
- Cotabato (Awang) AirportIdent: RPMCCountry: Philippines
- Coto 47 AirportIdent: MRCCCountry: Costa Rica
- Cotopaxi International AirportIdent: SELTCountry: Ecuador
- Coveñas AirportIdent: SKCVCountry: Colombia
- Cowra AirportIdent: YCWRCountry: Australia
- Cox FieldIdent: KPRXCountry: United States
- Cox's Bazar AirportIdent: VGCBCountry: Bangladesh
- Cranbrook/Canadian Rockies International AirportIdent: CYXCCountry: Canada
- Cranfield AirportIdent: EGTCCountry: United Kingdom
- Crater Lake-Klamath Regional AirportIdent: KLMTCountry: United States
- Creel International Airport / Barrancas del Cobre Regional AirportIdent: MX-0424Country: Mexico
- Creil Air BaseIdent: LFPCCountry: France
- Crossville Memorial Airport Whitson FieldIdent: KCSVCountry: United States
- Crotone Sant'Anna Pythagoras AirportIdent: LIBCCountry: Italy
- Cruzeiro do Sul AirportIdent: SBCZCountry: Brazil