| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| From CA to CZ |
| CALODOUCAS TRAVEL |
| CAPITAL TRAVEL |
| CAPTAIN NEMO |
| CARLSON WAGONLIT TRAVEL |
| CELEBRITY TRAVEL SOLUTIONS |
| CEL TOURS |
| CHAMPION TRAVEL OF ATHENS |
| C. H. A. T. TOURS Ltd. |
| CHIOTIS TRAVEL |
| CHINA TOURS |
| CHRISTIANAKIS TRAVEL LTD |
| CIRCLE TRAVEL SERVICES Ltd |
| CITITRAVEL Ltd |
| CITY PLAZA TRAVEL CENTER |
| CLIPPER TRAVEL |
| CLUB MEDITERRANEE HELLAS SA |
| CLUB UNIVERSE see TRAVELSCOPE |
| COHILI TOURS |
| COLOSSEUM TRAVEL |
| CONCEPTOURS Traveller’s Services |
| CONSOLAS TRAVEL |
| CORFU STAR |
| COSMORAMA LTD |
| COURMOUZIS TRAVEL SERVICE |
| CREDIT TOURS LTD |
| CRUISE – CLUB HOLIDAYS |
| CRUISEXPERTS HELLAS |
| C.T. TRAVEL |
| CTM INTERNATIONAL |