English abbreviations from iasip to ib
- IASIP(It's Always Sunny in Philadelphia)
- IASIS(International Association for Student Insurance Services)
- IASIW(Institute for the Advanced Study of Information Warfare)
- IASM(Informative All Student Meetings)
- IASO(International Association for the Study of Obesity)
- IASP(International Association for the Study of Pain)
- IASY((observing program) International Active Sun Year, the name given to a series of coordinated Sun-related observational programs performed in 1969 and 1971)
- IAT(Internal Active Turret)
- IATA(International Air Transport Association)
- IATACS(Improved Army Tactical Area Communications System)
- IATF(International Automotive Task Force)
- IATI(Infant Adoption Training Initiative)
- IATO(Interim Authority to Operate)
- IATSE(International Alliance of Theatrical Stage Employees)
- IATT(Institute for Advanced Theatre Training)
- IAU(International Association of Universities||International Astronomical Union)
- IAUA(Indian American Urological Association)
- IAUC(International Astronomical Union Circular)
- IAUP(International Association of Underwater Polo)
- IAVA(Information Assurance Vulnerability Alert)
- IAVM(Information Assurance Vulnerability Management)
- IAVMS(Installation Automated Vehicle Management System)
- IAW(In Accordance With)
- IAWT(Industrial Aerodynamics Wind Tunnel)
- IAYC((meeting) International Astronomical Youth Camp)
- IB(International Baccalaureate)
