| istc.org | International Student Travel Confederation |
| interactivetravel.org | Interactive Travel Services Association |
| adventuretravel.biz | Adventure Travel Trade Association |
| iglta.com | International Gay and Lesbian Travel Association |
| lata.org | Latin American Travel Association |
| istte.org | International Society of Travel and Tourism Educators |
| ifitt.org | International Federation for Information Technology and Tourism |
| iccl.org | International Council of Cruise Lines |
| iatm.co.uk | International Association of Tour Managers Ltd |
| iacvb.org | International Association of Convention and Visitor Bureaus |
Switzerland , Geneve , Vernier