| Organisateur | Pays | Salons enregistrés |
| I Castelli Animati | Italie | 1 |
| I.W. Enterprises, Inc. | USA - Etats-Unis d'Amérique | 1 |
| IAAPA (International Association of Amusement Parks and Attractions) | USA - Etats-Unis d'Amérique | 3 |
| IAHE (International Association for Hydrogen Energy) | USA - Etats-Unis d'Amérique | 1 |
| Ian Thompson Associates | Royaume Uni | 1 |
| IBC | Royaume Uni | 1 |
| IBC Asia (S) Pte Ltd | Singapour | 1 |
| IBC Burkina | Burkina Faso | 1 |
| IBC USA Conferences Inc. | USA - Etats-Unis d'Amérique | 2 |
| IBC-Burkina Sarl | Burkina Faso | 1 |
| IBE (International Business Events Ltd.) | Royaume Uni | 3 |
| IBMS (Institute of Biomedical Science) | Royaume Uni | 1 |
| IBP (Instituto Brasileiro de Petróleo, Gás e Biocombustíveis) | Brésil | 2 |
| Ibram (Instituto Brasileiro de Mineração) | Brésil | 1 |
| ICA (International Cartographic Association) | Royaume Uni | 1 |
| ICC Organization | Turquie | 1 |
| ICC Concepts | Irlande | 1 |
| ICEE (International Conferences & Exhibitions Ltd) | EAU - Emirats Arabes Unis | 1 |
| ICIA (International Communications Industries Association Inc.) | USA - Etats-Unis d'Amérique | 3 |
| ICS (Congresos Internacionales S.A.) | Argentine | 1 |
| ICS (Indian Ceramic Society) | Inde | 1 |
| ICWE GmbH | Allemagne | 5 |
| IDA (Indian Dental Association) | Inde | 1 |
| IDEquation | France | 1 |
| IDG World Expo | USA - Etats-Unis d'Amérique | 6 |
| Idice | France | 4 |
| IDTechEx Ltd | Royaume Uni | 2 |
| IEC (International Exhibitions and Conferences) | Maroc | 2 |
| IEC (International Exhibition Centre) | Ukraine | 9 |
| IED Communications Ltd. | Inde | 1 |
| IEEE | USA - Etats-Unis d'Amérique | 3 |
| IEEMA (Indian Electrical & Electronics Manufacturers' Association) | Inde | 1 |
| IEG Ukraine (International Exhibition Group) | Ukraine | 1 |
| IEG Uzbekistan | Ouzbékistan | 8 |
| IETF (Internet Engineering Task Force) | USA - Etats-Unis d'Amérique | 1 |
| IFA (International Fairs Agency) | Russie | 5 |
| IFAI (Industrial Fabrics Association International) | USA - Etats-Unis d'Amérique | 3 |
| IFE Portugal | Portugal | 1 |
| Ifema (Feria de Madrid) | Espagne | 86 |
| IFG (International Fairs Group) | Egypte | 6 |
| IFO (Istanbul Fair Organization Ltd.) | Turquie | 4 |
| IFP (Institut français du pétrole) | France | 2 |
| IFP Iraq | Iraq | 4 |
| IFP Jordan | Jordanie | 4 |
| IFP Qatar | Qatar | 2 |
| Ifra | Allemagne | 2 |
| IFT (Institute of Food Technologists) | USA - Etats-Unis d'Amérique | 1 |
| IFTF (International Fur Trade Federation) | Royaume Uni | 1 |
| IFWexpo Heidelberg GmbH | Allemagne | 2 |
| Igedo Company | Allemagne | 7 |
| IGU (International Gas Union) | Danemark | 1 |
| IHMA (International Hologram Manufacturers Association) | Royaume Uni | 1 |
| IHRDI (International Healthcare Research and Development Institute) | USA - Etats-Unis d'Amérique | 1 |
| IICF Secretariat | Inde | 1 |
| IIEC (Iran International Exhibitions Company) | Iran | 11 |
| IIR Exhibitions Ltd | Royaume Uni | 12 |
| IIR Exhibitions Pte Ltd | Singapour | 16 |
| IIR Middle East | EAU - Emirats Arabes Unis | 20 |
| ILE (Institution of Lighting Engineers) | Royaume Uni | 1 |
| ILS/CCI Bayonne Pays Basque | France | 1 |
| Imag | Allemagne | 51 |
| Images Multimedia Pvt. Ltd. | Inde | 1 |
| Imago Communications Ltd | Royaume Uni | 3 |
| Imarest (Institute of Marine Engineering, Science and Technology) | Royaume Uni | 1 |
| IMDLE (Iranian Association of Medical, Dental and Lab Equipment) | Iran | 1 |
| IME (International Medical Events) | France | 1 |
| IMechE (Institution of Mechanical Engineers) | Royaume Uni | 1 |
| IMG Singapore | Singapour | 1 |
| Impact Exhibition Management Co., Ltd. | Thaïlande | 1 |
| IMTMA (Indian Machine Tool Manufactuers Association) | Inde | 2 |
| in.Stuttgart Veranstaltungsgesellschaft mbH & Co. KG | Allemagne | 1 |
| Incheba Jsc | Slovaquie | 40 |
| Incheba Praha, s.r.o. | Rép. Tchèque | 36 |
| INDA (Association of the Nonwovens Fabrics Industry) | USA - Etats-Unis d'Amérique | 5 |
| Index (Conferences and Exhibitions Organisation Est) | EAU - Emirats Arabes Unis | 13 |
| India Core Events | Inde | 1 |
| India ITME Society | Inde | 1 |
| India Knit Fair Association | Inde | 1 |
| India Travel Mart - ITM | Inde | 7 |
| India-Tech Foundation | Inde | 2 |
| Industrial Media | Ukraine | 1 |
| INedit Publications SA | Suisse | 1 |
| INEGMA (Institute for Near East and Gulf Military Analysis) | EAU - Emirats Arabes Unis | 1 |
| Inexmoda | Colombie | 1 |
| Infinity Expositions Inc. | Inde | 2 |
| InfoDomus | Espagne | 1 |
| InfoEX-World Services Ltd. | Hong-Kong | 5 |
| Infomedia 18 Ltd | Inde | 4 |
| Infopromotions | France | 15 |
| Informa India | Inde | 7 |
| Informa Maritime & Transport | Royaume Uni | 1 |
| Informa Telecoms & Media | Royaume Uni | 9 |
| Informa Yacht Group | Suisse | 2 |
| Information Today, inc. | USA - Etats-Unis d'Amérique | 2 |
| INIS Enterprises Pvt. Ltd. | Inde | 1 |
| Innovalia | Espagne | 1 |
| Innovation Exhibitions | EAU - Emirats Arabes Unis | 14 |
| Institución Ferial Alicantina | Espagne | 19 |
| Institute of Industrial Exhibitions Co. Ltd. | Grèce | 1 |
| Instituto de Ingenieros de Minas del Perú | Pérou | 1 |
| Inter - Progress | Suisse | 1 |
| Inter - Progress Cameroun | Cameroun | 1 |
| Inter Ads Ltd. | Inde | 6 |
| Interalia | Espagne | 4 |
| InterBev Show Management | USA - Etats-Unis d'Amérique | 1 |
| Intergem Messe GmbH | Allemagne | 1 |
| Interior Design Show, MMPI | Canada | 1 |
| International Agri-Center, Inc. | USA - Etats-Unis d'Amérique | 1 |
| International Educational Services | Pakistan | 1 |
| International Exchange & Cooperation Center of SAWS | Chine | 1 |
| International Exhibition Company BT 1 | Lettonie | 36 |
| International Exhibitions, Inc. | USA - Etats-Unis d'Amérique | 1 |
| International Expo-Consults LLC | EAU - Emirats Arabes Unis | 6 |
| International Exposition | EAU - Emirats Arabes Unis | 2 |
| International Exposition Co. | USA - Etats-Unis d'Amérique | 3 |
| International Fair Plovdiv | Bulgarie | 37 |
| International Fairs & Events - France | France | 1 |
| International Fairs & Events - Maroc | Maroc | 1 |
| International Fairs and Promotion (IFP) | Liban | 15 |
| International Horti Fair B.V. | Pays-Bas | 1 |
| International Iran Med Fair | Iran | 1 |
| International Katowice Fair Ltd. | Pologne | 11 |
| International Magazines Ltd | Royaume Uni | 2 |
| International Pizza Expo | USA - Etats-Unis d'Amérique | 1 |
| Internationale Jaarbeurs van Vlaanderen | Belgique | 1 |
| Internet Society | USA - Etats-Unis d'Amérique | 2 |
| Interpoint Events | Australie | 2 |
| Intex Shanghai Co., Ltd. | Chine | 1 |
| Intrenasionale | Malaisie | 5 |
| Introductions Trade Shows | Inde | 9 |
| IOM3 (Institute of Materials, Minerals and Mining) | Royaume Uni | 1 |
| ioSposa | Italie | 2 |
| 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 | 2 |
| IPEMA (Indian poultry Equipment Manufacture's Association) | Inde | 1 |
| IPI (Industrial Promotions International) | Pays-Bas | 1 |
| IPN (International Property Networks) | Panama | 1 |
| IQPC | Royaume Uni | 1 |
| IRF (International Road Federation) | Suisse | 1 |
| Irish Services Ltd | Irlande | 5 |
| IRU (International Road Transport Union) | Suisse | 2 |
| ISA (International Sign Association) | USA - Etats-Unis d'Amérique | 1 |
| ISASF (International Society for Advancement of Supercritical Fluids) | France | 2 |
| ISES (International Solar Energy Society) | Allemagne | 2 |
| ISF Secretariat | Japon | 1 |
| Isfahan International Exhibitions Co. | Iran | 1 |
| ISGIO (International Society of Gastrointestinal Oncology) | USA - Etats-Unis d'Amérique | 1 |
| ISHRAE (Indian Society of Heating, Refrigerating and Airconditioning Engineers) | Inde | 1 |
| ISHS (International Society for Horticultural Science) | Belgique | 1 |
| ISLE (Indian Society of Lighting Engineers) | Inde | 1 |
| Israel Trade Fairs Center | Israël | 7 |
| ISSA (International Sanitary Supply Association) | USA - Etats-Unis d'Amérique | 4 |
| Italfiere Srl | Italie | 3 |
| ITE China | Chine | 3 |
| ITE Group Plc | Royaume Uni | 256 |
| ITE LLC MOSCOW | Russie | 31 |
| ITE Moda Ltd | Royaume Uni | 4 |
| ITE Uzbekistan | Ouzbékistan | 24 |
| Itec | France | 3 |
| Iteca | Kazakhstan | 48 |
| Iteca Caspian Ltd | Azerbaïdjan | 25 |
| Iteca Kavkasia | Géorgie | 2 |
| Iter Srl | Italie | 3 |
| ITF (Istanbul Trade Fairs) | Turquie | 12 |
| Ithaca Business Media | Royaume Uni | 1 |
| ITMA (International Traffic Medicine Association) | Suède | 1 |
| ITPO (India Trade Promotion Organisation) | Inde | 19 |
| ITPO (Iran Trade Promotion Org.) | Iran | 1 |
| ITRC (Iran Telecom Research Center) | Iran | 1 |
| ITS America | USA - Etats-Unis d'Amérique | 2 |
| ITU (International Telecommunication Union) | Suisse | 4 |
| Izfas | Turquie | 8 |
