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H2, H02, or H-2 may refer to:

Arts and media[change | change source]

  • Armenia 2 (H2), a private television company broadcasting in Armenia and Nagorno-Karabakh
  • H2 (TV channel), the rebranded name of the former channel History International
  • H2 (manga), a baseball manga by Mitsuru Adachi
  • Halo 2, a video game for the Xbox, created and developed by Bungie
  • Halloween II (2009 film), initially abbreviated to H2
  • Hollywood Squares, referred to as H2 informally during the 2002-2004 seasons

Computing[change | change source]

  • <h2></h2>, level 2 heading markup for HTML Web pages, see HTML element#heading
  • H2 (DBMS), an open-source Java SQL database-management system
  • DSC-H2, a 2006 Sony Cyber-shot H series camera
  • HTTP/2, major revision of HTTP, often abbreviated in discussions as h2, and identifying itself to other servers as h2 in TLS negotiation or h2c in the HTTP Upgrade header
  • LGA 1155 CPU socket, also known as Socket H2

Roads and transportation[change | change source]

Science and mathematics[change | change source]

Biology and medicine[change | change source]

Chemistry[change | change source]

  • H2, the chemical formula for hydrogen gas (Dihydrogen)
  • Hydrogen-2, H-2, 2H (called deuterium), the isotope of hydrogen with one proton, one neutron, and one electron

Other uses in science and mathematics[change | change source]

Vehicles[change | change source]

Air and space[change | change source]

  • H-II, a family of Japanese liquid-fueled rockets
  • H-2 MUPSOW, a precision-guided glide bomb manufactured by Pakistan
  • Landgraf H-2, an American single-seat twin-rotor helicopter produced in 1944
  • Standard H-2, a U.S. Army reconnaissance plane produced in 1916

Rail[change | change source]

Road[change | change source]

Sea[change | change source]

  • HMAS Success (H02), a Royal Australian Navy Admiralty S-class destroyer completed in 1918
  • HMS Exmouth (H02), a British Royal Navy E-class destroyer commissioned in 1934
  • HMS H2, a British Royal Navy H class submarine commissioned in 1915
  • USS H-2 (SS-29), a U.S. Navy H-class submarine commissioned in 1913

Other uses[change | change source]