IAP

IAP is an initialism that can mean:
* In-Application Programming, a way to program computer logic devices such as flash ROMs while they are installed in a larger system and being operated by the system's microcontroller using its normal applications program.
* Indanylaminopropane, an uncommon psychoactive chemical sometimes compared to MDMA
* Independent Activities Period held at MIT every year immediately after winter vacation
* Independent American Party of Nevada, the Nevada Constution Party affiliate.
* Indian Association of Physiotherapists, an association of registered doctors/practitioners of physical therapy in India.
* Individual Account Plan is the lump sum of money received on retirement by participants in the Motion Picture Industry Pension and Health Plans.
* Inhibitor of apoptosis, a protein family involved in the suppression of programmed cell death (apoptosis)
* Initial Approach Fix, part of an Instrument approach procedure.
* Institut d'astrophysique de Paris
* Institution of Analysts and Programmers, an international institution for professions involved in the analysis, development and testing of software
* Instrument approach procedure, a published procedure for the final approach for landing at an airport under instrument flight rules
* "International Airport", for example, Doha IAP
* International Association of Prosecutors, a non-governmental organisation established by the United Nations in 1995
* Internet service provider, also known as "Internet Access Provider" or "IAP", a business or organization that offers users access to the Internet and related services.
* Ion Activity Product, a term used in Chemistry
* Islamic Association of Palestine, a U.S.-based Islamic organization which was shut down by the U.S. government for raising money for Hamas
* Fraunhofer Institute for Applied Polymer Research, a German institute operated by the Fraunhofer Society
* Imaging atom probe
* I.A.P., a record label
* IAP, indoor air pollution in developing nations
* I'm Alan Partridge, a British sitcom
* Integrin Associated Protein or CD47 protein
* Italian Africa Police