English abbreviations from iap2 to iasil
- IAP2 (International Association for Public Participation)
- IAPAC (International Association of Physicians in AIDS Care)
- IAPMO (International Association of Plumbing and Mechanical Officials)
- IAPPP ((organization) International Amateur/Professional Photoelectric Photometry)
- IAPR (International Air Power Review)
- IAPSRS (International Association of Psychosocial Rehabilitation Services)
- IAPSS (International Association for Political Science Students)
- IAQ (Indoor air quality||Infrequently Asked Questions)
- IAR (Yaroslavl Airport)
- IARC (International Aerial Robotics Competition)
- IARD (Institute of Agricultural Research for Development)
- IARI (India Association of Rhode Island)
- IARS (International Anesthesia Research Society)
- IAS (Indicated airspeed)
- IASB (International African Service Bureau)
- IASC (Interagency Standing Committee (UN))
- IASD (Instant Ammunition Selection Device)
- IASE (Iowa Association of Safety Education)
- IASED (Information Assurance and Security Engineering Directorate)
- IASH (International Association for Stability Handling and Use of Liquid Fuels)
- IASI (International Association for Sports Information)
- IASIL (International Association for the Study of Irish Literatures)
