D2

D2, D02, D.II, D II or D-2 may refer to:

Places

• Dublin 2, a Dublin, Ireland postcode
• D2 motorway (Czech Republic)
• D2 road (Croatia), a state route in Croatia
• D2 motorway (Slovakia)
• Mount Dulang-dulang, the second highest mountain of the Philippines

Arts & entertainment

• D2: The Mighty Ducks, the second film in The Mighty Ducks trilogy
• R2-D2, a robotic Star Wars character

Video games

• Colin McRae: Dirt 2, a 2009 video game
• D2 (video game), a 1999 video game for the Sega Dreamcast
• Darksiders II, a 2012 video game
• Descent II, a 1996 video game
• Diablo II, a 2000 video game
• Disciples II: Dark Prophecy, a 2002 video game
• Disgaea 2: Cursed Memories, a 2006 video game
• Doom II: Hell on Earth, a 1994 video game
• Dota 2, a 2013 video game
• Driver 2, a 2000 video game

Business

• D2 (hotel chain), owned by Dusit Thani Group
• D2 Mannesmann, the former name of Vodafone's German division, which resulted from the acquisition of the German company Mannesmann AG
• D2, the IATA code for Damania Airways

Biology or medicine

• ATC code D02 Emollients and protectives, a subgroup of the Anatomical Therapeutic Chemical Classification System
• Dopamine receptor D₂, a protein
• Levuglandin D2
• Prostaglandin D₂ receptor, a G-protein coupled receptor
• Resolvin D2
• Cyclin D2 (CCND2)
• Vitamin D₂, or ergocalciferol
• D02, the ICD-10 Chapter II: Neoplasms code for carcinoma in situ of middle ear and respiratory system
• DIO2, Type II iodothyronine deiodinase, an enzyme involved in the thyroid system

Vehicles

Aircraft

• Albatros D.II, a 1916 German fighter aircraft
• Aviatik (Berg) D.II, a 1917 Austro-Hungarian fighter prototype
• STS-55 or D2, the second German-sponsored Spacelab mission
• Daimler D.II, a Daimler aircraft
• Delta D2, an Australian diesel-powered helicopter design
• Dewoitine D.2, a Dewoitine aircraft
• DFW DII, a Deutsche Flugzeug-Werke aircraft
• Dunne D.2, a British Dunne aircraft
• Euler D.II, a 1917 German single-seat fighter
• Fokker D.II, a WWI German fighter biplane
• Friedrichshafen D.II, a Flugzeugbau Friedrichshafen aircraft
• Halberstadt D.II, a 1916 German biplane fighter aircraft
• Hughes D-2, a 1943 mysterious American fighter and bomber project
• LFG Roland D.II, a 1917 German single-seat fighter
• Phönix D.II, a variant of the Austro-Hungarian First World War biplane fighter Phönix D.I
• Schütte-Lanz D.II, a 1915 variant of the German Schütte-Lanz D.I aircraft

Aircraft engines

• Alfa Romeo D2, a 1931 Italian nine-cylinder radial engine for aircraft use
• Mercedes D.II, a WWI 6-cylinder, liquid-cooled inline aircraft engine

Locomotives

• Bavarian D II, an 1898 German goods train tank locomotive model
• Bavarian D II (Ostbahn), an 1866 German goods train tender locomotive model
• Bavarian D II (old), an 1873 small tank locomotive
• GS&WR Class D2, a Great Southern and Western Railway Irish steam locomotive
• LB&SCR D2 class, a British LB&SCR locomotive
• PRR D2, an 1868 American steam locomotive model
• SP&S Class D-2, a steam locomotives class

Ships

• HMS Attacker (D02), a 1941 American-built escort aircraft carrier
• HMS Devonshire (D02), a 1962 County-class destroyer
• HMS Inglefield (D02), a 1936 I-class destroyer and flotilla leader of the British Royal Navy
• USS D-2 (SS-18), a 1909 American submarine

Other vehicles

• Char D2, a French tank
• DIGGER D-2, a demining vehicle

Electronics

• Cowon D2, a 2007 portable media player with touch screen interface
• Datasaab D2, a Swedish concept computer
• d2, a brand of computer peripherals manufactured by the French firm électronique d2, now trading as LaCie
• D2 kit, a microprocessor development kit MEK6800D2
• D-2 (video), a professional digital video format
• DOCSIS 2, a cable modem standard

Other uses

• D₂, a dihedral group in group theory
• D₂, a deuterium gas
• D2, an almond-shaped cloud on Neptune
• D2, the code for permission to use specific land or premises for leisure (cinemas, swimming baths, gymnasiums) in town and country planning in the United Kingdom
• Division II (disambiguation), in sports leagues, etc.
• Marcelo D2 (born 1967), Brazilian rapper
• D2, an abbreviation for DOCSIS 2.0, an international telecommunications standard
• D2 steel, a type of D-Grade tool steel with good wear resistance commonly found in shears and high end knives
• D2 diesel, diesel oil type 2, a special-purpose, light middle distillate fuel
• D2, gaming notation for a 2-sided die, such as a coin

See also

• 2D (disambiguation)