| Abbreviation | Definition |
|---|---|
| CTRE | Continuing Tourism Related Education |
| CTRI | Canadian Tourism Research Institute |
| CTTC | California Travel and Tourism Commission |
| CTTM | Center for Tropical and Travel Medicine |
| CTTM | Centre for Tropical and Travel Medicine |
| CTTP | Countering Terrorist Travel Programme |
| CTTR | Centre for Tourism Training and Research |
| CTVC | Complete Travel Visa Center |
| CTW | Corporate Travel World |
| CUBAR | Cruise Underway to Baja Rally |
| CUTD | Characteristics of Urban Travel Demand |
| CVNB | Czech Village New Bohemia |
| CVTA | Coastal Virginia Tourism Alliance |
| CVTB | C Valenciana Travel Bloggers |
| CVTB | Comunitat Valenciana Travel Bloggers |
| CWMR | Central Washington Mountain Rescue |
| CWT | Carlson Wagonlit Travel |
| CWTP | Certified Wellness Travel Professional |
| CWTS | China Women Travel Service |
| CWTS | China Womens Travel Service |