| Organizer | Country | Registered Events |
| C.E.E.D (Comité d'Expansion Économique du Sud Territoire de Belfort) | France | 1 |
| C.I.S Network Sdn Bhd | Malaysia | 4 |
| C.I.S Vietnam Advertising & Exhibition Ltd. | Vietnam | 4 |
| CAAPA (China Association of Amusement Parks and Attractions) | China | 1 |
| Caen Expo-Congrès | France | 1 |
| CAEPI (China Association of Environmental Protection Industry) | China | 1 |
| Camera Nazionale della Moda Italiana | Italy | 2 |
| Campus Editori S.r.l. | Italy | 3 |
| Canadian Western Agribition | Canada | 1 |
| Canary Wharf Motorexpo | UK - United Kingdom | 1 |
| Canon Communications LLC | USA - United States of America | 30 |
| Canton Universal Fair Group Ltd | China | 4 |
| CAPA (Chambre algérienne de la pêche et de l'aquaculture) | Algeria | 1 |
| CAPEB Pays de la Loire (Chambre artisanale et petites entreprises du bâtiment) | France | 2 |
| CAPEB Poitou-Charentes (Chambre artisanale et petites entreprises du bâtiment) | France | 1 |
| Capedes | Algeria | 2 |
| CardelleXpo Group, LLC | USA - United States of America | 1 |
| Caribbean Export | Barbados | 1 |
| CarraraFiere Srl | Italy | 4 |
| Carrefour Event | Morocco | 1 |
| Carte Performance | France | 3 |
| Catersource Magazine, Conference & Tradeshow | USA - United States of America | 1 |
| CAWG (California Association of Winegrape Growers) | USA - United States of America | 1 |
| CBAA (Canadian Business Aviation Association) | Canada | 1 |
| CCAM (Corporation des Concessionnaires d'Automobiles de Montréal) | Canada | 1 |
| CCI de la Drôme | France | 1 |
| CCI de la Vienne | France | 1 |
| CCI de Lyon | France | 1 |
| CCI de Reims et d'Epernay | France | 3 |
| CCI de Rennes | France | 1 |
| CCI de Roanne | France | 1 |
| CCI de Saint-Malo | France | 3 |
| CCIS (Chambre de Commerce et d'Industrie de Sfax) | Tunisia | 1 |
| CCPIT Beijing (China Council For The Promotion of International Trade Shenzhen Sub-Council) | China | 1 |
| CCPIT Building Materials Sub-Council | China | 2 |
| CCPIT CHEM (CCPIT Sub-council of Chemical Industry) | China | 1 |
| CCPIT Shandong (China Council For The Promotion of International Trade Shenzhen Sub-Council) | China | 1 |
| CCRE-35 (Club des créateurs et repreneurs d'entreprises d'Ile-et-Vilaine) | France | 1 |
| CCS (The Chinese Ceramic Society) | China | 1 |
| CDC Events | Belgium | 5 |
| CDO | France | 4 |
| CDOS (Centre for Development of Stones) | India | 1 |
| CEA (Consumer Electronics Association) | USA - United States of America | 5 |
| CEAC (China Electronic Appliance Corporation) | China | 3 |
| CECF (Chinese Export Commodities Fair) | China | 1 |
| CED (Centre Européen de Dermocosmétologie) | France | 2 |
| CEDIA (Custom Electronic Design & Installation Association) | USA - United States of America | 4 |
| CEDIA Asia Pacific | Australia | 1 |
| CEDIA UK Ltd | UK - United Kingdom | 1 |
| CEIEAC (China Enterprises International Exhibitions & Advertising Co., Ltd) | China | 1 |
| CEIEC (China Electronics International Exhibition & Advertising Co. Ltd.) | China | 1 |
| CEMATEX (European Committee of Textile Machinery Manufacturers) | UK - United Kingdom | 2 |
| CEMS (Conference & Exhibitions Management Services Pte Ltd) | Singapore | 9 |
| CEMS Bangladesh | Bangladesh | 15 |
| CEMS India Pvt Ltd. | India | 8 |
| CEMS Pakistan (Pvt.) Ltd. | Pakistan | 1 |
| CEMS USA | USA - United States of America | 5 |
| Centaur Exhibitions | UK - United Kingdom | 8 |
| Central Districts Field Days | New Zealand | 1 |
| Centre des Expositions du Mans | France | 3 |
| Centre France Evénements | France | 4 |
| Centrexpo S.p.A. | Italy | 4 |
| Cepex | Tunisia | 1 |
| Cesena Fiera S.p.A. | Italy | 7 |
| CFCIA (Chambre Française de Commerce et d’Industrie en Algérie) | Algeria | 4 |
| CFCIM (Chambre Française de Commerce et d’Industrie du Maroc) | Morocco | 3 |
| CFIP (Chamber of Furniture Industries of the Philippines) | Philippines | 1 |
| CGTA (Canadian Gift & Tableware Association) | Canada | 1 |
| Chambre de Métiers et de l'Artisanat d'Eure-et-Loir | France | 1 |
| Chan Chao International Co., Ltd | Taiwan | 14 |
| Channels Exhibitions | UAE - United Arab Emirates | 1 |
| Charleroi Expo | Belgium | 9 |
| Chemtech Foundation | India | 7 |
| CHES (Chinese Hydraulic Engineering Society) | China | 1 |
| China Ceramics City | China | 1 |
| China Crop Protection Industry Association | China | 1 |
| China Fastener Info | China | 1 |
| China Foreign Trade Guangzhou Exhibition Corp. | China | 18 |
| China Instrument & Control Society | China | 1 |
| China International functional fabrics and high-performance fibers Exhibition Merchants Office | China | 1 |
| China National Sugar and Alcohol Group Corp. | China | 1 |
| China Toy Association | China | 1 |
| Chinstarexpo Co. Ltd. | China | 1 |
| ChipExpo | Russia | 3 |
| CIA (Caravan Industry Australia) | Australia | 1 |
| CICES (Centre international du Commerce extérieur du Sénégal) | Senegal | 1 |
| CICGF Office | China | 1 |
| Cidex Trade Fairs Pvt. Ltd. | India | 4 |
| CIEC (China International Exhibition Center) | China | 7 |
| CIECC (China International Engineering Consulting Corporation) | China | 1 |
| CII (Confederation of Indian Industry) - Ahmedabad | India | 1 |
| CII (Confederation of Indian Industry) - Chandigarh | India | 3 |
| CIM (Canadian Institute of Mining, Metallurgy and Petroleum) | Canada | 1 |
| CIMA (China Instrument Manufacturer's Association) | China | 1 |
| Cired Secretariat | Belgium | 1 |
| Citem (Center for International Trade Expositions and Missions) | Philippines | 2 |
| CJSC 'Euroexpo' | Russia | 15 |
| Claever Associates bvba | Belgium | 1 |
| Clarion Defence Ltd | UK - United Kingdom | 1 |
| Clarion Events Ltd | UK - United Kingdom | 9 |
| CLEAN Middle East (Media Fusion Fze) | UAE - United Arab Emirates | 1 |
| Cleantech Venture Network | USA - United States of America | 1 |
| CLIA (China Leather Industry Association) | China | 3 |
| Click Bond, Inc. | USA - United States of America | 1 |
| Club des 3A (Les Amateurs d'Automobiles Anciennes) | France | 1 |
| ClubBi (Italian Association of Manufacturers of Fashion Jewellery) | Italy | 1 |
| CMAQ (Conseil des métiers d'art du Québec) | Canada | 2 |
| CMES (Chinese Mechanical Engineering Society) | China | 1 |
| CMP Asia Ltd. | Hong Kong | 5 |
| CMP Asia Trade Fairs Pte Ltd | Singapore | 1 |
| CMP China | China | 8 |
| CMP India (UBM India Pvt. Ltd.) | India | 15 |
| CMP Information - Netherlands Office | Netherlands | 11 |
| CMP Information (CMPi) | USA - United States of America | 1 |
| CMP Information Brazil | Brazil | 4 |
| CMP Medica (UBM) | UK - United Kingdom | 1 |
| CMP Technology Japan Co., Ltd | Japan | 4 |
| CMT (Centre for Management Technology) | Singapore | 3 |
| CNCIC (China National Chemical Information Center) | China | 1 |
| CNCR (Conseil National de Concertation et de Coopération des Ruraux) | Senegal | 1 |
| CNHPIA (China National Household Paper Industry Association) | China | 1 |
| CNISF (Conseil national des ingénieurs et scientifiques de France) | France | 2 |
| CNPA (Conseil national des professions de l'automobile) | France | 1 |
| CNR Expo | Turkey | 17 |
| Coastal International Exhibition Co., Ltd | Hong Kong | 6 |
| Code Events | France | 1 |
| CODISSIA Trade Fair Complex | India | 2 |
| COEMA (China Optics and Optoelectronics Manufactures Association) | China | 1 |
| COEX (Convention & Exhibition) | Korea South | 7 |
| Coffee & Tea in Russia | Russia | 1 |
| Cogen Europe | Belgium | 1 |
| Coges (commissariat général des expositions et salons du Gicat) | France | 1 |
| Collège Français de Métrologie | France | 1 |
| Colloquium | France | 2 |
| Colmar Expo | France | 6 |
| Comet (Comité d'organisation des manifestations économiques et touristiques) | France | 2 |
| Comexposium | France | 116 |
| Comité des Fêtes, Foires et Salons de La Rochelle | France | 5 |
| Comité-Entreprise Sarl | France | 1 |
| Communica Organisation | France | 2 |
| COMPASSexpo Ltd | Greece | 3 |
| Computerworld Events | USA - United States of America | 2 |
| Concours Lépine | France | 1 |
| Conférence PHP Québec | Canada | 1 |
| Conference Service S.r.l. | Italy | 3 |
| Congrès et Expositions de Bordeaux | France | 10 |
| Congress and Exhibition Services | Hungary | 1 |
| Congress und Messe Innsbruck GmbH | Austria | 1 |
| CongrExpo d.o.o. | Serbia | 4 |
| CongrExpo Intercional | Panama | 1 |
| Conseil canadien de la fourrure - Fur Council of Canada | Canada | 1 |
| CONSULTEC (China Economic & Trade Consultants Corporation) | China | 1 |
| Contact Events | Morocco | 1 |
| Contech | Canada | 2 |
| Continental Expo | France | 1 |
| Conventions & Fairs (India) Pvt Ltd. | India | 12 |
| Converting Technical Institute | Japan | 1 |
| Conxemar Association | Spain | 1 |
| Corferias | Colombia | 20 |
| Corporation des entrepreneurs généraux du Québec | Canada | 1 |
| Cosmit S.p.A. | Italy | 6 |
| Côté Maison (Groupe Express-Expansion, Express Roularta) | France | 1 |
| Coteo | France | 1 |
| Couleurs Com Sarl | Morocco | 1 |
| Couromoda Feiras Comerciais | Brazil | 1 |
| CP Exhibition (China Promotion Ltd.) | Hong Kong | 12 |
| CPE Exhibition | Belgium | 19 |
| CPH Vision | Denmark | 1 |
| CPI (Chamber of Printing Industries) | Egypt | 1 |
| Crafts America LLC | USA - United States of America | 3 |
| Creativity Convention & Exhibition | China | 1 |
| CremonaFiere S.p.A. | Italy | 1 |
| Crocus Expo IEC | Russia | 1 |
| Cross Group | UK - United Kingdom | 2 |
| CSFA (Cyprus State Fairs Authority) | Cyprus | 5 |
| CTIA - The Wireless Association | USA - United States of America | 2 |
| Cubic Globe Ltd. | UK - United Kingdom | 6 |
| CURVExpo | USA - United States of America | 2 |
| CWC Associates Limited | UK - United Kingdom | 6 |
| Cyber Merchants Exchange | USA - United States of America | 1 |
