CA Customer Alliance Cadabra
  Cal Jet Elite Airways California Tourism
  California Travel Association Canadian Tourism Commission
  Canadian Transportation Agency Candlewood
  Cape Air Capital Airlines
  Careerbuilder Caribbean Cruise Line
  Caribbean Hotel and Tourism Association (CHTA) Caribbean Tourism Organization
  Caribbean Wedding Association CaribbeanWay
  Carlson Carlson Rezidor Hotel Group
  Carlson Wagonlit Carnival Corporation
  Carol Verret Cathay Pacific
  CCRA Travel Solutions Celebrity Cruises
  Cendant Cendyn
  Center for Marketing Effectiveness CEO Strategist
  Certain Software
  Charlie Cook CHART - Council of Hotel and Restaurant Trainers
  Cheapflights Ltd
  CheapOair China Airlines
  Choice Aire Choice Hotels
  Circle Line Sightseeing Cruises City Accommodation
  CK Consulting CLIA
  ClickZ Club Med
  Conde Nast Traveller Luxury Travel Fair Condo Hotel Center
  Condor Airlines Connected Traveler
  Constant Contact Consumer WebWatch
  Contiki Holidays Continental Airlines
  Convention Industry Council Copa Airlines
  COPC Inc. Cornell
  Cornell Center For Hospitality Research Cornerstone Information Systems
  Corporate Planners Unlimited Costa Cruises
  Coyle Hospitality Group Crowne Plaza
  Cruise Industry Wire Cruise Shipping Miami
  Cruise West Crystal Cruises
  CSA Travel Protection Cultural Restoration Tourism Project
  Cunard Custom Aire Travel