| Organisateur | Pays | Salons enregistrés |
| I Castelli Animati | Italie | 1 |
| i2i Events Group | Royaume-Uni | 8 |
| IAAPA (International Association of Amusement Parks and Attractions) | USA | 3 |
| IAARC (International Association for Automation and Robotics in Construction) | Corée du Sud | 1 |
| IAB Italia - Interactive Advertising Bureau | Italie | 1 |
| IAHE (International Association for Hydrogen Energy) | USA | 2 |
| IAPH (International Association of Ports and Harbors) | Japon | 1 |
| IBC | Royaume-Uni | 1 |
| IBE (International Business Events Ltd.) | Royaume-Uni | 1 |
| IBMS (Institute of Biomedical Science) | Royaume-Uni | 1 |
| IBP (Instituto Brasileiro de Petróleo, Gás e Biocombustíveis) | Brésil | 2 |
| Ibram (Instituto Brasileiro de Mineração) | Brésil | 2 |
| ICA (International Cartographic Association) | Royaume-Uni | 1 |
| ICC Organization | Turquie | 1 |
| ICEE (International Conferences & Exhibitions Ltd) | Émirats Arabes Unis | 1 |
| ICEM (International Company Exhibition Management) | Pays-Bas | 1 |
| ICIA (International Communications Industries Association Inc.) | USA | 3 |
| ICLEI Europe | Allemagne | 1 |
| ICM d.o.o. | Slovénie | 13 |
| ICO (International Council of Ophtalmology) | USA | 1 |
| ICS (Indian Ceramic Society) | Inde | 1 |
| ICS Convention Design, Inc. | Japon | 6 |
| Icsid - Ida (International Council of Societies of Industrial Design) | Canada | 1 |
| ICWE GmbH | Allemagne | 3 |
| IDA (Indian Dental Association) | Inde | 1 |
| IDG Vietnam | Vietnam | 1 |
| IDG World Expo | USA | 2 |
| Idice SAS | France | 3 |
| IDIS Event | France | 2 |
| IDTechEx Ltd | Royaume-Uni | 4 |
| IEC (International Exhibitions and Conferences) | Maroc | 3 |
| IEC (International Exhibition Centre) | Ukraine | 10 |
| IEC ExpoGroup Ltd. | Kazakhstan | 1 |
| IED Communications Ltd. | Inde | 1 |
| IEEE | USA | 4 |
| IEEMA (Indian Electrical & Electronics Manufacturers' Association) | Inde | 1 |
| IEG Uzbekistan | Ouzbékistan | 2 |
| IETA/World Bank | Suisse | 1 |
| IETF (Internet Engineering Task Force) | USA | 1 |
| IFAI (Industrial Fabrics Association International) | USA | 2 |
| Ifema (Feria de Madrid) | Espagne | 58 |
| IFG (International Fairs Group) | Égypte | 5 |
| IFO (Istanbul Fair Organization Ltd.) | Turquie | 4 |
| IFP (Institut français du pétrole) | France | 1 |
| IFP Iraq | Iraq | 5 |
| IFP Qatar | Qatar | 4 |
| Ifra | Allemagne | 1 |
| IFT (Institute of Food Technologists) | USA | 1 |
| IFTF (International Fur Trade Federation) | Royaume-Uni | 1 |
| IFWexpo Heidelberg GmbH | Allemagne | 7 |
| Igedo Company | Allemagne | 2 |
| IGU (International Gas Union) | Danemark | 1 |
| IHA (International Housewares Association) | USA | 1 |
| Ihlas Fuarcilik | Turquie | 3 |
| IHMA (International Hologram Manufacturers Association) | Royaume-Uni | 1 |
| IIEC (Iran International Exhibitions Company) | Iran | 8 |
| IIR Exhibitions Ltd | Royaume-Uni | 5 |
| IIR Middle East | Émirats Arabes Unis | 31 |
| IIR USA | USA | 1 |
| IIW India (Indian Institute of Welding) | Inde | 1 |
| IJV-IFAS vzw | Belgique | 1 |
| ILE (Institution of Lighting Engineers) | Royaume-Uni | 1 |
| ILS/CCI Bayonne Pays Basque | France | 1 |
| Imag | Allemagne | 43 |
| Images Group | Inde | 8 |
| Imago Techmedia Ltd | Royaume-Uni | 3 |
| Imarest (Institute of Marine Engineering, Science and Technology) | Royaume-Uni | 1 |
| IME (International Medical Events) | France | 1 |
| Impact Exhibition Hosts | Afrique du Sud | 1 |
| Impact Exhibition Management Co., Ltd. | Thaïlande | 1 |
| Impressive Exhibitions Pty Ltd | Australie | 4 |
| IMTMA (Indian Machine Tool Manufactuers Association) | Inde | 4 |
| in.Stuttgart Veranstaltungsgesellschaft mbH & Co. KG | Allemagne | 1 |
| Incheba Jsc | Slovaquie | 38 |
| Incheba Praha, s.r.o. | Rép. Tchèque | 20 |
| INDA (Association of the Nonwovens Fabrics Industry) | USA | 5 |
| Index (Conferences and Exhibitions Organisation Est) | Émirats Arabes Unis | 13 |
| India ITME Society | Inde | 1 |
| India Knit Fair Association | Inde | 1 |
| India-Tech Foundation | Inde | 2 |
| Industrial Research Institute for Automation and Measurements PIAP | Pologne | 1 |
| INEGMA (Institute for Near East and Gulf Military Analysis) | Émirats Arabes Unis | 1 |
| Inexmoda | Colombie | 1 |
| InfoEX-World Services Ltd. | Hong Kong | 2 |
| Infomedia 18 Ltd | Inde | 10 |
| InfoPro Communications | France | 16 |
| Infopromotions | France | 14 |
| Informa | Suisse | 120 |
| Informa Brasil | Brésil | 1 |
| Informa Canada | Canada | 9 |
| Informa Exhibitions Middle East | Émirats Arabes Unis | 5 |
| Informa Exhibitions Pte Ltd | Singapour | 14 |
| Informa Telecoms & Media | Royaume-Uni | 9 |
| Informa UK | Royaume-Uni | 9 |
| Informa Yacht Group | Suisse | 1 |
| Information Today, inc. | USA | 2 |
| Infothe Co. Ltd. | Corée du Sud | 1 |
| Infovel | Suisse | 1 |
| Inkanyezi Event Organisers (Pty) Ltd | Afrique du Sud | 1 |
| InnoEcho | France | 1 |
| Innoprom Team | Russie | 1 |
| Innovability Srl | Italie | 1 |
| Innovalia | Espagne | 1 |
| Innovation Exhibitions | Émirats Arabes Unis | 8 |
| Institución Ferial Alicantina | Espagne | 16 |
| Instituto de Ingenieros de Minas del Perú | Pérou | 1 |
| Intelligent Exhibitions Ltd | Royaume-Uni | 1 |
| Inter - Progress | Suisse | 1 |
| Inter - Progress Cameroun | Cameroun | 1 |
| Inter Ads - Brooks Exhibitions (India) Pvt. Ltd | Inde | 8 |
| Interalia | Espagne | 3 |
| InterBev Show Management | USA | 1 |
| Intergem Messe GmbH | Allemagne | 1 |
| Interior Design Show, MMPI | Canada | 1 |
| Inter-Media Consultant Co. Ltd. | Thaïlande | 1 |
| International Agri-Center, Inc. | USA | 1 |
| International Club Exhibitions srl | Italie | 2 |
| International Exchange & Cooperation Center of SAWS | Chine | 1 |
| International Exhibition Company BT 1 | Lettonie | 35 |
| International Exhibitions, Inc. | USA | 1 |
| International Expo-Consults LLC | Émirats Arabes Unis | 2 |
| International Exposition Co. | USA | 3 |
| International Fair Plovdiv | Bulgarie | 26 |
| International Fairs and Promotion (IFP) | Liban | 30 |
| International Fuller Woman Expo | USA | 1 |
| International Pizza Expo | USA | 1 |
| Internationale Jaarbeurs van Vlaanderen | Belgique | 1 |
| Internet Society | USA | 2 |
| Interpoint Events | Australie | 1 |
| Intex Shanghai Co., Ltd. | Chine | 1 |
| Intrenasionale | Malaisie | 3 |
| Introductions Trade Shows | Inde | 7 |
| Inventech | France | 1 |
| i-one | Belgique | 1 |
| IP Security Events & Media Ltd. | Royaume-Uni | 1 |
| Ipack-Ima Spa | Italie | 5 |
| Ipama (Indian Printing Packaging and Allied Machinery Manufacturers Association) | Inde | 1 |
| Ipekyolu International Exhibitions Ltd. | Turquie | 1 |
| IPEMA (Indian poultry Equipment Manufacture's Association) | Inde | 1 |
| IPEX (Instituto para a Promoção de Exportações) | Mozambique | 1 |
| Ipex World | Royaume-Uni | 1 |
| IPI (Industrial Promotions International) | Pays-Bas | 1 |
| IPIM - Macao Trade and Investment Promotion Institute | Macao | 2 |
| IQPC | Royaume-Uni | 2 |
| IRF (International Road Federation) | Suisse | 1 |
| Irish Services Ltd | Irlande | 2 |
| IRU (International Road Transport Union) | Suisse | 1 |
| ISA (International Sign Association) | USA | 1 |
| ISASF (International Society for Advancement of Supercritical Fluids) | France | 2 |
| ISES (International Solar Energy Society) | Allemagne | 2 |
| ISF Secretariat | Japon | 1 |
| ISGIO (International Society of Gastrointestinal Oncology) | USA | 1 |
| ISHRAE (Indian Society of Heating, Refrigerating and Airconditioning Engineers) | Inde | 1 |
| ISHS (International Society for Horticultural Science) | Belgique | 3 |
| ISLE (Indian Society of Lighting Engineers) | Inde | 1 |
| Israel Trade Fairs Center | Israël | 10 |
| ISRO (Indian Space Research Organisation) | Inde | 1 |
| ISSA (International Sanitary Supply Association) | USA | 4 |
| Italfiere Srl | Italie | 1 |
| Italia Crea Srl | Italie | 5 |
| ITE China | Chine | 1 |
| ITE Group Plc | Royaume-Uni | 265 |
| ITE LLC MOSCOW | Russie | 22 |
| ITE Moda Ltd | Royaume-Uni | 4 |
| ITE Siberian Fair, LLC | Russie | 38 |
| ITE Uzbekistan | Ouzbékistan | 22 |
| Iteca | Kazakhstan | 36 |
| Iteca Caspian LLC | Azerbaïdjan | 17 |
| Iteca Kavkasia | Géorgie | 1 |
| ITEI (International Trade & Exhibition India Pvt. Ltd) | Inde | 8 |
| Iter Srl | Italie | 3 |
| ITF (Istanbul Trade Fairs) | Turquie | 9 |
| Ithaca Business Media | Royaume-Uni | 1 |
| ITMA (International Traffic Medicine Association) | Suède | 1 |
| ITPO (India Trade Promotion Organisation) | Inde | 7 |
| ITPO (Iran Trade Promotion Org.) | Iran | 1 |
| ITRC (Iran Telecom Research Center) | Iran | 1 |
| ITS America | USA | 3 |
| ITU (International Telecommunication Union) | Suisse | 1 |
| IVM (Industrie-Verband Motorrad Deutschland e.V.) | Allemagne | 1 |
| Izba Gospodarcza Wodociagi Polskie | Pologne | 1 |
| Izfas | Turquie | 13 |
