U2 (disambiguation)

U2 is an Irish rock band.

U2 or U-2 may also refer to:

Arts and entertainment

 * U2 (EP), a withdrawn 1991 record by Negativland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

Organizations

 * Under2 Coalition, a group of states and subnational jurisdictions committed to fighting climate change
 * U2 Clothing, a casual-wear brand

Science and technology

 * Diuranium (U2), two uranium atoms in a molecule
 * U(2), the two-dimensional unitary group in mathematics

Biology

 * U2 spliceosomal RNA, a component of the spliceosome
 * Urotensin 2, a cardiovascular peptide
 * Haplogroup U2 (mtDNA), a human mitochondrial DNA lineage

Computing and electronics

 * D battery, a dry-cell battery type also known as U2
 * 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
 * EasyJet (IATA code: U2), an airline
 * 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

 * U2, an unemployment figure released by the U.S. Bureau of Labor Statistics