IAS

IAS may stand for

• Insolvency Advisory Service LLP
• Illawarra Astronomical Society
• Indian Academy of Sciences
• Indian Administrative Service
• Indicated airspeed
• Ideal Adsorbed Solution, thermodynamic theory of adsorption of Minka and Myers
• International Accounting Standards
• International Adsorption Society
• International Affairs Specialist United States Air Force Officer Program emphasizing international understanding, cultural expertise, and adaptive language skills
• International AIDS Society, an organization of physicians, scientists, and public health workers who treat HIV/AIDS
• International Atherosclerosis Society
• Interpersonal Adjectives Scale
• Institute for Advanced Study
  • The IAS computer built at the Institute for Advanced Study
• Institute of African Studies (University of Bayreuth)
• Institute for Anarchist Studies
• Institute of Advanced Studies of the United Nations University (UNU-IAS)
• Institute of the Aeronautical Sciences
• Interocean American Shipping
• International Association of Scientologists
• International Association of Sedimentologists
• Interactive Application System, a variant of the RSX-11 operating system
• Internet Authentication Service
• Internet Application Server an application server from Oracle Corporation
• Intelligent Application Switch
• Intelligence and Analysis Service, Japan's intelligence agency
• Integrated Anti-Swimmer System, an ultrasound system to detect submerged divers
• IAS Internet Slang- An expression used over internet to show amusement
• Islamic World Academy of Sciences, an organization promoting science and technology in the Muslim World
• Iaşi International Airport in Iaşi, Romania, designated by IATA airport code IAS

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