IAC

See also: IACS

IAC can mean:

Medicine

• Internal auditory canal or internal acoustic canal, an opening in the temporal bone of the skull which contains nerves running from the ear to the brain

Organizations

• Interstate Arms Corporation, a firearms company specializing in reproductions of repeating shotguns
• Interstate Athletic Conference, an all-boys high school sports league, is made of six private high schools in the Washington, DC area
• Interstate Aviation Committee
• International Astronautical Congress
• IAC (company) (InterActiveCorp), an American conglomerate
• Inter-African Committee on Traditional Practices Affecting the Health of Women and Children which raises consciousness about female genital cutting and similar issues
• International Academy of Cytology, an international organisation of cytologists and professional persons concerned with research in clinical cytology
• International Action Center, a leftist organization
• International Aerobatic Club, which governs aerobatics in the United States under the regulation of the Fédération Aéronautique Internationale
• Instituto de Astrofísica de Canarias, an astrophysical research institute based in the Canary Islands, Spain
• Irish Air Corps, the Aviation wing of the Irish Defense Forces
• Industrial Acoustics Company, the world's largest provider of noise and acoustic control products, structures and test facilities
• Industry Advisory Council
• Industrial Assessment Center, a U.S. Department of Energy program which trains engineering students and provides free energy efficiency assessments to small manufacturers
• InterAcademy Council

Other

• Idle Air Controller, a motor-driven valve which controls intake air to maintain idle RPM in internal combustion engines
• Immunoaffinity column chromatography, a method for preparation, separation or purification of biochemical mixtures
• Interactive Activation and Competition, a kind of Neural network
• International access code, in telecommunications
• Interapplication Communications, the previous name of Mac OS X's Apple events
• Interpret As Command, a control character in the Telnet protocol
• Image of the Absolute Conic, an entity of interest in computer vision
• Imperfect authentic cadence, in music