Roads and transportation

• Interstate H-2
  Interstate H-2
  Interstate H-2 is an intrastate Interstate Highway located on the island of O‘ahu in Hawai‘i, USA. H-2 is also known as the Veterans Memorial Freeway. Despite the number, this is a north–south interstate—the 'H'-series numbering reflects the order in which routes were funded and built...
  
  , a highway in Hawaii, located on the island of Oahu
• London Buses route H2
  London Buses route H2
  London Buses route H2 is a Transport for London contracted bus route in London, United Kingdom. The service is currently contracted to Arriva Shires & Essex.-History:...
  
  
• HII, the IATA airport code for Lake Havasu City Airport
  Lake Havasu City Airport
  Lake Havasu City Airport , also known as Lake Havasu City Municipal Airport, is a city-owned public-use airport located six miles north of the central business district of Lake Havasu City, in Mohave County, Arizona, United States....
  
  

Science

• Hydrogen-2, H-2, ²H (called deuterium
  Deuterium
  Deuterium, also called heavy hydrogen, is one of two stable isotopes of hydrogen. It has a natural abundance in Earth's oceans of about one atom in of hydrogen . Deuterium accounts for approximately 0.0156% of all naturally occurring hydrogen in Earth's oceans, while the most common isotope ...
  
  ), the isotope of hydrogen with one proton, one neutron, and one electron
• Dihydrogen, or H₂, molecular hydrogen composed of two hydrogen atoms
• H II region
  H II region
  An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived, blue stars forged in these regions emit copious amounts of ultraviolet light, ionizing the surrounding gas...
  
  , an astrophysical cloud in which star formation takes place
• ATC code H02
  ATC code H02
  -H02AA Mineralocorticoids:-H02AA Mineralocorticoids:-H02AA Mineralocorticoids::H02AA01 Aldosterone:H02AA02 Fludrocortisone:H02AA03 Desoxycortone-H02AB Glucocorticoids::H02AB01 Betamethasone:H02AB02 Dexamethasone:H02AB03 Fluocortolone...
  
   Corticosteroids for systemic use, a subgroup of the Anatomical Therapeutic Chemical Classification System
• Histamine H₂ receptor
• Prostaglandin H2
  Prostaglandin H2
  Prostaglandin H2 is a type of Prostaglandin which is derived from arachidonic acid and is a precursor for many other biologically significant molecules.It is acted upon by:* prostacyclin synthase to create prostacyclin...
  
  
• H-2, the Major Histocompatibility Complex
  Major histocompatibility complex
  Major histocompatibility complex is a cell surface molecule encoded by a large gene family in all vertebrates. MHC molecules mediate interactions of leukocytes, also called white blood cells , which are immune cells, with other leukocytes or body cells...
  
   of the mouse (equivalent of the Human Leukocyte Antigens), one of the three laryngeals in the reconstructed Proto-Indo-European language
• or , wide- or narrow-sense heritability
  Heritability
  The Heritability of a population is the proportion of observable differences between individuals that is due to genetic differences. Factors including genetics, environment and random chance can all contribute to the variation between individuals in their observable characteristics...
  
  

Vehicles

• H2 lamp, a halogen headlamp
• H02 locomotive (Germany), a high-pressure steam locomotive made in 1930
• H-II
  H-II
  The H-II rocket was a Japanese satellite launch system, which flew seven times between 1994 and 1999, with five successes. It was developed by NASDA in order to give Japan a capability to launch larger satellites in the 1990s. It was the first two-stage liquid-fuelled rocket Japan made using only...
  
  , a family of Japanese liquid-fueled rockets
  • H-IIA
    H-IIA
    H-IIA is an active expendable launch system operated by Mitsubishi Heavy Industries for the Japan Aerospace Exploration Agency . The liquid-fueled H-IIA rockets have been used to launch satellites into geostationary orbit, to launch a lunar orbiting spacecraft, and to launch an interplanetary...
    
    
  • H-IIB
    H-IIB
    H-IIB is an expendable launch system used to launch H-II Transfer Vehicles towards the International Space Station. H-IIB rockets are liquid-fuelled with solid-fuel strap-on boosters and are launched from the Tanegashima Space Center in Japan...
    
    
  • H-II Transfer Vehicle
    H-II Transfer Vehicle
    The H-II Transfer Vehicle , called , is an unmanned resupply spacecraft used to resupply the Kibō Japanese Experiment Module and the International Space Station . The Japan Aerospace Exploration Agency has been working on the design since the early 1990s. The first mission, HTV-1, was originally...
    
    , a Japan Aerospace Exploration Agency unmanned spacecraft
• HMAS Success (H02), a Royal Australian Navy Admiralty S-class destroyer completed in 1918
• HMS Exmouth (H02)
  HMS Exmouth (H02)
  HMS Exmouth was an E-class destroyer flotilla leader built for the Royal Navy in the early 1930s. Although assigned to the Home Fleet upon completion, the ship was attached to the Mediterranean Fleet in 1935–36 during the Abyssinia Crisis...
  
  , a British Royal Navy E-class destroyer commissioned in 1934
• HMS H2
  HMS H2
  HMS H2 was a British H-class submarine built by Canadian Vickers, Montreal.She was laid down on 11 January 1915 and was commissioned on 4 June 1915. After commissioning, H2 crossed the Atlantic from St. John's, Newfoundland to Gibraltar escorted by the armed merchant cruiser . She was accompanied...
  
  , a British Royal Navy H class submarine commissioned in 1915
• Hummer H2
  Hummer H2
  The Hummer H2 is an SUV and SUT that was marketed by General Motors under the Hummer brand. It is a large truck , while longer, heavier , and taller with room for six passengers , seven passengers in some models. The rearmost part of the H2 SUV was modified to a pickup truck bed for the 2005 H2 SUT...
  
  , a car model
• Kawasaki H2 Mach IV
  Kawasaki H2 Mach IV
  The Kawasaki H2 Mach IV was a 750 cc 3-cylinder two-stroke production motorcycle manufactured by the Kawasaki. The H2 was a Kawasaki triple sold from 1972 through 1975....
  
  , a model of motorcycle
• Landgraf H-2
  Landgraf H-2
  |-See also:...
  
  , an American single-seat twin-rotor helicopter produced in 1944
• LB&SCR H2 class
  LB&SCR H2 class
  The London, Brighton and South Coast Railway H2 class was a class of 4-4-2 steam locomotives for express passenger work. They were designed when D. E. Marsh was officially Locomotive Superintendent, and were built at Brighton Works in 1911 and 1912...
  
  , a British LB&SCR locomotive
• PRR H2, a model within the American PRR locomotive classification
  PRR locomotive classification
  Locomotive classification on the Pennsylvania Railroad took several forms. Early on, steam locomotives were given single-letter classes. As the 26 letters were quickly assigned, that scheme was abandoned for a more complex system...
  
  
• Saxon XII H2
  Saxon XII H2
  The Saxon Class XII H2 steam locomotives were bought by the Royal Saxon State Railways specifically for the mountainous areas of Saxony. They were built by Hartmann between 1910 and 1927 in Chemnitz...
  
  , a German steam locomotive produced in 1922
• Standard H-2
  Standard H-2
  The Standard H-2 was an early American Army reconnaissance aircraft, ordered in 1916.Built by the Standard Aircraft Corporation, the H-2, based on the Sloane H-2, was an open-cockpit three-place tractor biplane, powered by a 125 hp Hall-Scott A-5 engine...
  
  , a U.S. Army reconnaissance plane produced in 1916
• USS H-2 (SS-29)
  USS H-2 (SS-29)
  USS H-2 was a H-class submarine. She was originally named Nautilus, the third ship and first submarine of the United States Navy to bear the name, which was derived from a Greek word meaning "sailor" or "ship." The nautilus is also a tropical mollusk having a many-chambered, spiral shell with a...
  
  , a U.S. Navy H-class submarine commissioned in 1913

Other

• H2 (DBMS)
  H2 (DBMS)
  H2 is a relational database management system written in Java. It can be embedded in Java applications or run in the client-server mode. The disk footprint is about 1 MB....
  
  , an open source Java SQL database management system
• H2 (manga)
  H2 (manga)
  is a Japanese manga written by Mitsuru Adachi portraying high school baseball. It has been made into an 41-episode anime series and an 11-episode television drama series, H2: Kimi to Ita Hibi, directed by Yukihiko Tsutsumi.-Plot:...
  
  , a baseball manga by Mitsuru Adachi
• H-2A Visa
  H-2A Visa
  An H-2A visa allows a foreign national entry into the U.S. for temporary or seasonal agricultural work. There are several requirements of the employer in regards to this visa. The H-2A temporary agricultural program establishes a means for agricultural employers who anticipate a shortage of...
  
  , a United States visa for temporary or seasonal agricultural work
  • H-2 Worker
    H-2 Worker
    H-2 Worker is a 1990 documentary film about the exploitation of workers in Florida's sugar cane industry. It was directed by Stephanie Black, and won the Sundance Film Festival Grand Jury Prize for documentaries in the 1990 festival.-External links:...
    
    , a 1990 documentary film about the exploitation of workers in Florida's sugar cane industry
• British NVC community H2, a heath community in the British National Vegetation Classification system
• DSC-H2, a 2006 Sony Cyber-shot H series camera
• H-2 MUPSOW, a precision-guided glide bomb manufactured by Pakistan
• H2 is the rebranded name of the former channel, History International, a spin off of History (formerly The History Channel).

See also

• H02, a code for "Other inflammation of eyelid" in ICD-10 Chapter VII: Diseases of the eye, adnexa
• SH-2 Seasprite
  SH-2 Seasprite
  The Kaman SH-2 Seasprite is a ship-based helicopter with anti-submarine, anti-surface threat capability, including over-the-horizon targeting. This aircraft extends and increases shipboard sensor and weapon capabilities against several types of enemy threats, including submarines of all types,...
  
  , an American helicopter
• H2, the second half of the business year
• Halo 2
  Halo 2
  Halo 2 is a first-person shooter video game developed by Bungie Studios. Released for the Xbox video game console on November 9, 2004, the game is the second installment in the Halo franchise and the sequel to 2001's critically acclaimed Halo: Combat Evolved...
  
  , a video game for the Xbox, created and developed by Bungie
• Halloween II (2009 film)
  Halloween II (2009 film)
  Halloween II is a 2009 American horror film written, directed, and produced by Rob Zombie. The film is a sequel to Zombie's 2007 remake of Halloween , and the second film in the rebooted Halloween film series and the tenth Halloween film in total...
  
  
• Sky Airline
  Sky Airline
  Sky Airline is an airline based at Comodoro Arturo Merino Benítez International Airport in Santiago, Chile. It is the second largest airline in the country behind rival LAN Airlines, and mostly relies on domestic services.- History :...
  
   IATA code
• Harrison Number Two, an 18th century marine chronometer built by John Harrison
  John Harrison
  John Harrison was a self-educated English clockmaker. He invented the marine chronometer, a long-sought device in solving the problem of establishing the East-West position or longitude of a ship at sea, thus revolutionising and extending the possibility of safe long distance sea travel in the Age...
  
  
• Hollywood Squares
  Hollywood Squares
  Hollywood Squares is an American panel game show in which two contestants play tic-tac-toe to win cash and prizes. The "board" for the game is a 3 × 3 vertical stack of open-faced cubes, each occupied by a celebrity seated at a desk and facing the contestants...
  
  , referred to as H² informally during the 2002-2004 seasons
• H2, a model of hurricane tie manufactured by Simpson Strong-Tie Co.