UA

UA usually refers to:
 * Under Armour, an American clothing brand (NYSE ticker UA)
 * United Airlines, a major American airline headquartered in Chicago, Illinois (IATA airline designator UA)
 * University of Arizona, a public research university in Tucson, Arizona, United States

UA may also refer to:

Gaming

 * Unearthed Arcana, a Dungeons & Dragons sourcebook
 * Unknown Armies, a role playing game
 * Urban Assault, a first-person shooter and real-time strategy computer game

Music

 * Ua (born 1972), a Japanese singer-songwriter
 * United Abominations, an album by the band Megadeth

Other uses in arts and entertainment

 * United Artists, a defunct film studio
 * The Umbrella Academy, a graphic novel by Gerard Way

Businesses and organizations

 * Uitgesloten aansprakelijkheid (lit. 'excluded liability'), a Dutch form of cooperative, which has legal personality, but with members (at least two on incorporation) rather than shareholders, with no capital and therefore no minimum capital or equity requirement, and with articles of association that can be worded such that members are not liable for the actions performed by the Cooperative (or losses suffered), usually used as a holding or finance company
 * ultrAslan, a fan group of the Galatasaray Spor Kulübü football team
 * Union Association, a baseball league of 1884
 * United Artists, a film studio
 * United Association, a plumbing and pipefitting labor union in the U.S. and Canada
 * Universal Audio (company), a designer and manufacturer of audio signal processing hardware and software
 * University Alliance, a lobbying group of British universities
 * UP Aerospace, a private spaceflight company based in Denver, Colorado

Military uses

 * German submarine UA, a German submarine of the Second World War
 * German Type UA submarine, of the First World War
 * SM UA, a World War I submarine of Imperial Germany
 * Unauthorized Absence, a key term for the abandonment of a duty or post without permission (United States)
 * Future Force Unit of Action, a proposed US Army tactical unit

Places

 * ua, ISO country code for Ukraine
 * Uttaranchal now Uttarakhand, a state in northern India, formerly abbreviated as UA (as in vehicle registration plates)
 * Uà, Ligurian for the Italian commune of Ovada
 * Upper Arlington, Ohio

Schools

 * 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 Arkansas, a public, co-educational, land-grant, space-grant, research university in Fayetteville, Arkansas, United States

Biology and medicine

 * Unstable angina, a type of heart disease
 * Uric acid, a metabolic compound
 * Urinalysis (also U/A), a set of medical diagnostic tests performed on urine

Computing and telecommunications

 * .ua, the Internet country code top-level domain (ccTLD) for Ukraine
 * User agent, a computer networking software class
 * User Assistance, computer programme manuals and documentation
 * Universal Acceptance, a term to represent the principle that accepts all the email addresses with every Top-level domain (TLD).
 * OPC Unified Architecture, a protocol used in industry 4.0 for inter machine communication

Other uses in science and technology

 * Unmanned aircraft or unmanned aerial vehicle (UAV), an aircraft without a human pilot aboard (commonly known as a drone)
 * Microampere (uA, properly μA), a unit of electric current defined as one-millionth of an ampere
 * UA, the product of a heat exchanger's Overall Heat Transfer Coefficient U and its active exchange area A in thermodynamics

Other uses

 * Unit of account, a nominal monetary unit of measure or currency used to represent the real value (or cost) of any economic item (in economics), or the words that are used to describe the specific assets and liabilities that are reported in financial statements rather than the units used to measure them (in financial accounting)
 * Unitary authority, a type of local authority that has a single tier and is responsible for all local government functions within its area, or performs additional functions which elsewhere in the relevant country are usually performed by national government or a higher level of sub-national government
 * Urban area, a human settlement with high population density and infrastructure of built environment