# UA

UA may refer to:

## Arts and entertainment
### Gaming

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

### Other uses in arts and entertainment

* Ua (singer) (born 1972), a Japanese singer-songwriter
* United Abominations, an album by the band Megadeth
* United Artists, a defunct film studio
* The Umbrella Academy, a graphic novel by Gerard Way

## Organizations
### 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)
* United Artists, a film studio
* 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

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

## Places

* ua, ISO country code for Ukraine
* Uttaranchal, a state in India formerly abbreviated as UA in vehicle registration plates
* Upper Arlington, Ohio

## Science and technology
### 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 for Ukraine
* User agent, a computer networking software class
* User assistance, computer programme manuals and documentation
* Universal Acceptance, a principle regarding top-level domains
* 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
* 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, in economics, a standard numerical monetary unit of measurement
* Unitary authority, a type of local authority that is responsible for all local government functions within its area
* Urban area or urban agglomeration, a human settlement with high population density and infrastructure of built environment