U2 (disambiguation)
# U2 (disambiguation)

U2 is an Irish rock band.

U2 or U-2 may also refer to:

## Arts, entertainment and media

* U2 (EP), a withdrawn 1991 record by Negativland
* U2 by U2, an autobiography by the band members
* Ultima II: The Revenge of the Enchantress, a 1982 role-playing video game
* Uncharted 2: Among Thieves, a 2009 action-adventure video game
* "U-2", a 2010 song by Iamamiwhoami
* U2, an Indian Kannada-language music television channel

## Biochemistry and genetics

* U2 spliceosomal RNA, a component of the spliceosome
* Urotensin 2, a cardiovascular peptide
* U2 haplogroup, a human mitochondrial DNA lineage

## Computing and electronics

* U2, a dry-cell battery type now known as a D battery
* U.2 (formerly known as SFF-8639), a connector used by some NVM Express storage devices
* Rocket U2, UniVerse and UniData database systems

## Transportation and vehicles

* German submarine U-2, one of several German submarines
* U2, a Transport for London bus route from Uxbridge to Brunel University
* Siemens-Duewag U2, a light rail vehicle

### Aviation

* Lockheed U-2, a U.S. reconnaissance aircraft
   * 1960 U-2 incident, an international incident involving a U.S. Lockheed U-2 over the Soviet Union
* EasyJet's IATA airline code
* Polikarpov U-2, a Soviet biplane
* Wills Wing U2, an American hang glider design
* Udet U 2, a German light aircraft

### U-Bahn lines

* U2 (Berlin U-Bahn)
* U2 (Frankfurt U-Bahn)
* U2 (Hamburg U-Bahn)
* U2 (Munich U-Bahn)
* U2 (Nuremberg U-Bahn)
* U2 (Vienna U-Bahn)

## Other uses

* The Under2 Coalition, a group of states and subnational jurisdictions committed to fighting climate change
* U2 Clothing, a casual-wear brand
* U(2), the two-dimensional unitary group
* U2, an unemployment figure released by the U.S. Bureau of Labor Statistics
