Non-cooperative businesses •
Under Armour, an American clothing brand (NYSE ticker: UA) •
Union Association, a baseball league of 1884 •
United Airlines, a major American airline headquartered in Chicago, Illinois (IATA airline designator: UA) •
Universal Audio (company), a designer and manufacturer of audio signal processing hardware and software •
UP Aerospace, a private spaceflight company based in Denver, Colorado
Universities and university consortiums •
University Alliance, a lobbying group of British universities •
University of Abra, a public university in Abra, Philippines •
University of Akron, a public research university in Akron, Ohio, United States •
University of Alabama, a public research university located in Tuscaloosa, Alabama, United States •
University of Alaska system, a university system in Alaska created in 1975 :*
University of Alaska Anchorage, the largest university by enrollment in the system :*
University of Alaska Fairbanks, the first university and flagship (known from 1925 to 1975 simply as the University of Alaska) :*
University of Alaska Southeast, located in the capital city of Juneau, and the smallest by enrollment •
University of Alicante, a public university in Alicante, Spain •
University of Antwerp, one of the major Belgian universities located in the city of Antwerp •
University of Arizona, a public research university in Tucson, Arizona, United States •
University of Arkansas, a public, co-educational, land-grant, space-grant, research university in Fayetteville, Arkansas, United States
Other organizations •
ultrAslan, a fan group of the Galatasaray Spor Kulübü football team •
United Association, a plumbing and pipefitting labor union in the US and Canada ==Military==