Uia is a locality in the Marquesas Islands.
UIA may refer to:
Airlines Ukraine International Airlines, the flag carrier of Ukraine Uni Air (ICAO: UIA), a Taiwanese regional airline based in Zhongshan, Taipei United International Airlines, a Serbian cargo airline
Professional organizations and unions Argentine Industrial Union (Unión Industrial Argentina) International Union of Architects (Union internationale des Architectes) Union Internationale des Avocats (International Association of Lawyers)
Universities International Islamic University Malaysia (Universiti Islam Antarabangsa) Universidad Iberoamericana in Mexico University of Agder (Universitetet i Agder) University of Antwerp (Universitaire Instelling Antwerpen)
Other uses Microsoft UI Automation, a computer accessibility technology Uganda Investment Authority UIA Mutual, an insurance company in the United Kingdom Ukrainian Insurgent Army Unemployment Insurance Agency, the agency that oversees unemployment compensation in the U.S. state of Michigan Union of International Associations United Iraqi Alliance United Israel Appeal Ethel (cat), a cat known for UIA Cat meme.