| Veranstalter | Land | Eingetragene Veranstaltungen |
| I Castelli Animati | Italien | 1 |
| i2i Events Group | Vereinigtes Königreich | 8 |
| IAAPA (International Association of Amusement Parks and Attractions) | USA | 3 |
| IAARC (International Association for Automation and Robotics in Construction) | Südkorea | 1 |
| IAB Italia - Interactive Advertising Bureau | Italien | 1 |
| IAHE (International Association for Hydrogen Energy) | USA | 2 |
| IAPH (International Association of Ports and Harbors) | Japan | 1 |
| IBC | Vereinigtes Königreich | 1 |
| IBE (International Business Events Ltd.) | Vereinigtes Königreich | 1 |
| IBMS (Institute of Biomedical Science) | Vereinigtes Königreich | 1 |
| IBP (Instituto Brasileiro de Petróleo, Gás e Biocombustíveis) | Brasilien | 2 |
| Ibram (Instituto Brasileiro de Mineraçăo) | Brasilien | 2 |
| ICA (International Cartographic Association) | Vereinigtes Königreich | 1 |
| ICC Organization | Türkei | 1 |
| ICEE (International Conferences & Exhibitions Ltd) | VAE - Vereinigte Arabische Emirate | 1 |
| ICEM (International Company Exhibition Management) | Niederlande | 1 |
| ICIA (International Communications Industries Association Inc.) | USA | 3 |
| ICLEI Europe | Deutschland | 1 |
| ICM d.o.o. | Slowenien | 13 |
| ICO (International Council of Ophtalmology) | USA | 1 |
| ICS (Indian Ceramic Society) | Indien | 1 |
| ICS Convention Design, Inc. | Japan | 6 |
| Icsid - Ida (International Council of Societies of Industrial Design) | Kanada | 1 |
| ICWE GmbH | Deutschland | 3 |
| IDA (Indian Dental Association) | Indien | 1 |
| IDG Vietnam | Vietnam | 1 |
| IDG World Expo | USA | 2 |
| Idice SAS | Frankreich | 3 |
| IDIS Event | Frankreich | 2 |
| IDTechEx Ltd | Vereinigtes Königreich | 4 |
| IEC (International Exhibitions and Conferences) | Marokko | 3 |
| IEC (International Exhibition Centre) | Ukraine | 10 |
| IEC ExpoGroup Ltd. | Kasachstan | 1 |
| IED Communications Ltd. | Indien | 1 |
| IEEE | USA | 4 |
| IEEMA (Indian Electrical & Electronics Manufacturers' Association) | Indien | 1 |
| IEG Uzbekistan | Usbekistan | 2 |
| IETA/World Bank | Schweiz | 1 |
| IETF (Internet Engineering Task Force) | USA | 1 |
| IFAI (Industrial Fabrics Association International) | USA | 2 |
| Ifema (Feria de Madrid) | Spanien | 58 |
| IFG (International Fairs Group) | Ägypten | 5 |
| IFO (Istanbul Fair Organization Ltd.) | Türkei | 4 |
| IFP (Institut français du pétrole) | Frankreich | 1 |
| IFP Iraq | Irak | 5 |
| IFP Qatar | Katar | 4 |
| Ifra | Deutschland | 1 |
| IFT (Institute of Food Technologists) | USA | 1 |
| IFTF (International Fur Trade Federation) | Vereinigtes Königreich | 1 |
| IFWexpo Heidelberg GmbH | Deutschland | 7 |
| Igedo Company | Deutschland | 2 |
| IGU (International Gas Union) | Dänemark | 1 |
| IHA (International Housewares Association) | USA | 1 |
| Ihlas Fuarcilik | Türkei | 3 |
| IHMA (International Hologram Manufacturers Association) | Vereinigtes Königreich | 1 |
| IIEC (Iran International Exhibitions Company) | Iran | 8 |
| IIR Exhibitions Ltd | Vereinigtes Königreich | 5 |
| IIR Middle East | VAE - Vereinigte Arabische Emirate | 31 |
| IIR USA | USA | 1 |
| IIW India (Indian Institute of Welding) | Indien | 1 |
| IJV-IFAS vzw | Belgien | 1 |
| ILE (Institution of Lighting Engineers) | Vereinigtes Königreich | 1 |
| ILS/CCI Bayonne Pays Basque | Frankreich | 1 |
| Imag | Deutschland | 43 |
| Images Group | Indien | 8 |
| Imago Techmedia Ltd | Vereinigtes Königreich | 3 |
| Imarest (Institute of Marine Engineering, Science and Technology) | Vereinigtes Königreich | 1 |
| IME (International Medical Events) | Frankreich | 1 |
| Impact Exhibition Hosts | Südafrika | 1 |
| Impact Exhibition Management Co., Ltd. | Thailand | 1 |
| Impressive Exhibitions Pty Ltd | Australien | 4 |
| IMTMA (Indian Machine Tool Manufactuers Association) | Indien | 4 |
| in.Stuttgart Veranstaltungsgesellschaft mbH & Co. KG | Deutschland | 1 |
| Incheba Jsc | Slowakei | 38 |
| Incheba Praha, s.r.o. | Tschechien | 20 |
| INDA (Association of the Nonwovens Fabrics Industry) | USA | 5 |
| Index (Conferences and Exhibitions Organisation Est) | VAE - Vereinigte Arabische Emirate | 13 |
| India ITME Society | Indien | 1 |
| India Knit Fair Association | Indien | 1 |
| India-Tech Foundation | Indien | 2 |
| Industrial Research Institute for Automation and Measurements PIAP | Polen | 1 |
| INEGMA (Institute for Near East and Gulf Military Analysis) | VAE - Vereinigte Arabische Emirate | 1 |
| Inexmoda | Kolumbien | 1 |
| InfoEX-World Services Ltd. | Hongkong | 2 |
| Infomedia 18 Ltd | Indien | 10 |
| InfoPro Communications | Frankreich | 16 |
| Infopromotions | Frankreich | 14 |
| Informa | Schweiz | 120 |
| Informa Brasil | Brasilien | 1 |
| Informa Canada | Kanada | 9 |
| Informa Exhibitions Middle East | VAE - Vereinigte Arabische Emirate | 5 |
| Informa Exhibitions Pte Ltd | Singapur | 14 |
| Informa Telecoms & Media | Vereinigtes Königreich | 9 |
| Informa UK | Vereinigtes Königreich | 9 |
| Informa Yacht Group | Schweiz | 1 |
| Information Today, inc. | USA | 2 |
| Infothe Co. Ltd. | Südkorea | 1 |
| Infovel | Schweiz | 1 |
| Inkanyezi Event Organisers (Pty) Ltd | Südafrika | 1 |
| InnoEcho | Frankreich | 1 |
| Innoprom Team | Russland | 1 |
| Innovability Srl | Italien | 1 |
| Innovalia | Spanien | 1 |
| Innovation Exhibitions | VAE - Vereinigte Arabische Emirate | 8 |
| Institución Ferial Alicantina | Spanien | 16 |
| Instituto de Ingenieros de Minas del Perú | Peru | 1 |
| Intelligent Exhibitions Ltd | Vereinigtes Königreich | 1 |
| Inter - Progress | Schweiz | 1 |
| Inter - Progress Cameroun | Kamerun | 1 |
| Inter Ads - Brooks Exhibitions (India) Pvt. Ltd | Indien | 8 |
| Interalia | Spanien | 3 |
| InterBev Show Management | USA | 1 |
| Intergem Messe GmbH | Deutschland | 1 |
| Interior Design Show, MMPI | Kanada | 1 |
| Inter-Media Consultant Co. Ltd. | Thailand | 1 |
| International Agri-Center, Inc. | USA | 1 |
| International Club Exhibitions srl | Italien | 2 |
| International Exchange & Cooperation Center of SAWS | China | 1 |
| International Exhibition Company BT 1 | Lettland | 35 |
| International Exhibitions, Inc. | USA | 1 |
| International Expo-Consults LLC | VAE - Vereinigte Arabische Emirate | 2 |
| International Exposition Co. | USA | 3 |
| International Fair Plovdiv | Bulgarien | 26 |
| International Fairs and Promotion (IFP) | Libanon | 30 |
| International Fuller Woman Expo | USA | 1 |
| International Pizza Expo | USA | 1 |
| Internationale Jaarbeurs van Vlaanderen | Belgien | 1 |
| Internet Society | USA | 2 |
| Interpoint Events | Australien | 1 |
| Intex Shanghai Co., Ltd. | China | 1 |
| Intrenasionale | Malaysia | 3 |
| Introductions Trade Shows | Indien | 7 |
| Inventech | Frankreich | 1 |
| i-one | Belgien | 1 |
| IP Security Events & Media Ltd. | Vereinigtes Königreich | 1 |
| Ipack-Ima Spa | Italien | 5 |
| Ipama (Indian Printing Packaging and Allied Machinery Manufacturers Association) | Indien | 1 |
| Ipekyolu International Exhibitions Ltd. | Türkei | 1 |
| IPEMA (Indian poultry Equipment Manufacture's Association) | Indien | 1 |
| IPEX (Instituto para a Promoçăo de Exportaçőes) | Mosambik | 1 |
| Ipex World | Vereinigtes Königreich | 1 |
| IPI (Industrial Promotions International) | Niederlande | 1 |
| IPIM - Macao Trade and Investment Promotion Institute | Macao | 2 |
| IQPC | Vereinigtes Königreich | 2 |
| IRF (International Road Federation) | Schweiz | 1 |
| Irish Services Ltd | Irland | 2 |
| IRU (International Road Transport Union) | Schweiz | 1 |
| ISA (International Sign Association) | USA | 1 |
| ISASF (International Society for Advancement of Supercritical Fluids) | Frankreich | 2 |
| ISES (International Solar Energy Society) | Deutschland | 2 |
| ISF Secretariat | Japan | 1 |
| ISGIO (International Society of Gastrointestinal Oncology) | USA | 1 |
| ISHRAE (Indian Society of Heating, Refrigerating and Airconditioning Engineers) | Indien | 1 |
| ISHS (International Society for Horticultural Science) | Belgien | 3 |
| ISLE (Indian Society of Lighting Engineers) | Indien | 1 |
| Israel Trade Fairs Center | Israel | 10 |
| ISRO (Indian Space Research Organisation) | Indien | 1 |
| ISSA (International Sanitary Supply Association) | USA | 4 |
| Italfiere Srl | Italien | 1 |
| Italia Crea Srl | Italien | 5 |
| ITE China | China | 1 |
| ITE Group Plc | Vereinigtes Königreich | 265 |
| ITE LLC MOSCOW | Russland | 22 |
| ITE Moda Ltd | Vereinigtes Königreich | 4 |
| ITE Siberian Fair, LLC | Russland | 38 |
| ITE Uzbekistan | Usbekistan | 22 |
| Iteca | Kasachstan | 37 |
| Iteca Caspian LLC | Aserbaidschan | 17 |
| Iteca Kavkasia | Georgien | 1 |
| ITEI (International Trade & Exhibition India Pvt. Ltd) | Indien | 8 |
| Iter Srl | Italien | 3 |
| ITF (Istanbul Trade Fairs) | Türkei | 9 |
| Ithaca Business Media | Vereinigtes Königreich | 1 |
| ITMA (International Traffic Medicine Association) | Schweden | 1 |
| ITPO (India Trade Promotion Organisation) | Indien | 7 |
| ITPO (Iran Trade Promotion Org.) | Iran | 1 |
| ITRC (Iran Telecom Research Center) | Iran | 1 |
| ITS America | USA | 3 |
| ITU (International Telecommunication Union) | Schweiz | 1 |
| IVM (Industrie-Verband Motorrad Deutschland e.V.) | Deutschland | 1 |
| Izba Gospodarcza Wodociagi Polskie | Polen | 1 |
| Izfas | Türkei | 13 |
