IAAMC: International Association of Association Management Companies
IAAPA: International Association of Amusement Parks and Attractions
IACA: International Air Charter Association
IACVB: International Association of Convention and Visitor Bureaus
IAEM: International Association of Exposition Managers
IAFC: Independent Air Fares Committee
IAMAT: International Association for Medical Assistance to Travellers
IAMC: Institute of Association Management Companies
IAPA: International Airline Passenger's Association
IASC: International Airline Services Commission
IATA: International Air Transport Association
IATAN: International Airline Travel Agents Network
IATM: International Association of Tour Managers
IBN: Invoice Batch Note
ICOMOS: International Council on Monuments & Sites
ICTF: International Catering Trade Fair
IDVS: Industry Development & Visitor Servicing
IFAPA: International Foundation of Airline Passenger Associations
IFEA: International Festivals and Events Association
IFS: Inland Fisheries Service
IFTTA: International Forum of Travel and Tourism Advocates
IFWTO: International Federation of Women's Travel Organizations
IGTA: International Gay Travel Association
IHA: International Hotel Association
IIF: Innovation Investment Fund
ILAM: Institute of Leisure and Amenity Management
IMN: International Motorcoach Network
IMS: Inventory Management System
IOC: International Olympic Committee
IOTO: Indian Ocean Tourism Organisation
IPS: International Passenger Survey
ISC: International SKAL Council
ISES: International Special Events Society
ISHAE: International Society of Hotel Association Executives
ISL: Internet Solutions Ltd.
ISTA: International Sightseeing and Tours Association
ISTC: International Student Travel Conference
IT: Inclusive Tour
IT&ME: Incentive Travel and Meeting Executives
IT&T: Information Technology and Telecommunications