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

Arts and media

Armenia 2 Second Armenian TV Channel Company ( hy, Հայկական երկրորդ հեռուստաալիք), also known as H2 ( hy, Հ2) or Armenia 2, is a private television company broadcasting in Armenia and Artsakh. Approximately 95% of the TV viewers ...

(H2), a private television company broadcasting in Armenia and Nagorno-Karabakh * H2 (A&E Networks), the rebranded name of the former channel ''History International'' **

H2 (American TV channel) H2 (formerly History International) was an American specialty television channel that was owned by A+E Networks (a joint venture between the Hearst Corporation and the Disney–ABC Television Group), available on multi-channel television provide ...

, the American version of the channel * ''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

* , level 2 heading markup for HTML Web pages, see HTML element#heading * H2 (DBMS), an open-source Java SQL database-management system *

DSC-H2 Notes: * DSC is an abbreviation for Digital Still Camera * Models without a “V” suffix do not include built-in GPS functionality D series F series G series H series All cameras used CCD sensors and had optical image ...

, 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

* Interstate H-2, a highway in Hawaii, located on the island of Oahu *

London Buses route H2 This is a list of Transport for London (TfL) contracted bus routes in London, England, as well as commercial services that enter the Greater London area (except coaches). Bus services in London are operated by Abellio London, Arriva London, G ...

Science and mathematics

Biology and medicine

ATC code H02 H02A Corticosteroids for systemic use, plain H02AA Mineralocorticoids :H02AA01 Aldosterone :H02AA02 Fludrocortisone :H02AA03 Desoxycortone H02AB Glucocorticoids :H02AB01 Betamethasone :H02AB02 Dexamethasone :H02AB03 Fluocortolone :H02AB04 Methy ...

''Corticosteroids for systemic use'', a subgroup of the Anatomical Therapeutic Chemical Classification System *

British NVC community H2 NVC community H2 (''Calluna vulgaris - Ulex minor'' heath) is one of the heath communities in the British National Vegetation Classification system. It is one of five communities categorised as lowland dry heaths. It has a localised distribution i ...

, a heath community in the British National Vegetation Classification system * Histamine H₂ receptor * Prostaglandin H2 * H-2, the

Major histocompatibility complex The major histocompatibility complex (MHC) is a large locus on vertebrate DNA containing a set of closely linked polymorphic genes that code for cell surface proteins essential for the adaptive immune system. These cell surface proteins are calle ...

of the mouse (equivalent of the Human Leukocyte Antigens) *

H^2

h^2

, wide- or narrow-sense heritability

Chemistry

* H₂, the chemical formula for hydrogen gas (dihydrogen) * Deuterium (Hydrogen-2, H-2, ²H), the isotope of hydrogen with one proton, one neutron, and one electron

Other uses in science and mathematics

* H II region, a region of interstellar atomic hydrogen that is ionized * *h2, , one of the three laryngeals in the reconstructed Proto-Indo-European language * The Hardy space H square, H²

Vehicles

Air and space

* H-II, a family of Japanese liquid-fueled rockets ** H-IIA ** H-IIB ** H-II Transfer Vehicle, a Japan Aerospace Exploration Agency unmanned spacecraft * 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

Automobiles

* Haval H2, a Chinese subcompact SUV * Hummer H2, an American full-size SUV

Motorcycles

* Kawasaki H2 Mach IV, 1970s two-stroke motorcycle * Kawasaki Ninja H2, 2010s supercharged motorcycle

Rail

* LB&SCR H2 class, a British LB&SCR locomotive * H02 locomotive (Germany), a high-pressure steam locomotive made in 1930 * Saxon XII H2, a German steam locomotive produced in 1922 * PRR H2, a model within the American PRR locomotive classification * H2, designation for METRORail Siemens S70 light rail vehicles

Sea

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

Other uses

* H-2 Air Base, a military air base in Iraq * H2 (classification), a para-cycling classification * H-2A Visa, a United States visa for temporary or seasonal agricultural work * H2, the second half of the business year * H2 lamp, a halogen vehicle headlamp no longer manufactured * H2, a model of hurricane tie manufactured by Simpson Strong-Tie Co. * Sky Airline (IATA code H2) * Area H2, an Israeli-controlled area under the Protocol Concerning the Redeployment in Hebron, Hebron Protocol *H2 as the nickname for New Zealand civil servant Heather Simpson (civil servant), Heather Simpson