# D2

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{{wiktionary|d2|D2}}
'''D2''', '''D02''', '''D.II''', '''D II''' or '''D-2''' may refer to:

{{TOC right}}

==Places==
* [Dublin 2](/source/Dublin_2), a Dublin, Ireland postcode
* [Mount Dulang-dulang](/source/Mount_Dulang-dulang), the second highest mountain of the Philippines
* D2, a line of [Moscow Central Diameters](/source/Moscow_Central_Diameters)
* D2 Place One and Two, at Cheung Yue Street and Cheung Shun Street, in [Cheung Sha Wan](/source/Cheung_Sha_Wan), [MTR](/source/MTR) [Lai Chi Kok Station](/source/Lai_Chi_Kok_station) Exit D1 and D2.

===Highways===
* [D2 motorway (Czech Republic)](/source/D2_motorway_(Czech_Republic))
* [D2 road (Croatia)](/source/D2_road_(Croatia)), a state route in Croatia
* [D2 motorway (Slovakia)](/source/D2_motorway_(Slovakia))

==Arts & entertainment==
* [''D-2'' (mixtape)](/source/D-2_(mixtape)), a 2020 album by South Korean rapper Agust D
* ''[D2: The Mighty Ducks](/source/D2%3A_The_Mighty_Ducks)'', the second film in ''The Mighty Ducks'' trilogy
* [R2-D2](/source/R2-D2), a robotic ''Star Wars'' character
* "[D²](/source/D%C2%B2_(Dexter's_Laboratory))", a 2002 episode of ''Dexter's Laboratory''
* [''D2'' (video game)](/source/D2_(video_game)), a 1999 game for the Sega Dreamcast
* ''D2'', an abbreviation of the video game ''[Diablo II](/source/Diablo_II)'' or ''[Destiny 2](/source/Destiny_2)''
* D2, a sub-group of the Japanese male acting troupe [D-Boys](/source/D-Boys)
* ''[Dhoom 2](/source/Dhoom_2)'', a 2006 Indian Hindi-language action film by Sanjay Gadhvi, second part of the ''Dhoom'' film series

==Business==
* [D2 (hotel chain)](/source/D2_(hotel_chain)), owned by Dusit Thani Group
* [D2 Mannesmann](/source/D2_Mannesmann), the former name of Vodafone's German division, which resulted from the acquisition of the German company Mannesmann AG
* [''D2'' (magazine)](/source/D2_(magazine)), published by ''Dagens Næringsliv''
* D2, formerly the IATA code for defunct [Damania Airways](/source/Damania_Airways)
* D2, the IATA airline code for [Severstal Avia](/source/Severstal_Avia)

==Biology or medicine==
* [ATC code D02](/source/ATC_code_D02) Emollients and protectives, a subgroup of the Anatomical Therapeutic Chemical Classification System
* [Dopamine receptor D<sub>2</sub>](/source/Dopamine_receptor_D2), a protein
* [Levuglandin D2](/source/Levuglandin_D2)
* [Prostaglandin D<sub>2</sub> receptor](/source/Prostaglandin_D2_receptor), a G-protein coupled receptor
* [Resolvin D2](/source/Resolvin_D2)
* [Cyclin D2](/source/Cyclin_D2) (CCND2)
* Vitamin D<sub>2</sub>, or [ergocalciferol](/source/ergocalciferol)
* D02, the [ICD-10](/source/ICD-10) code for carcinoma in situ of middle ear and respiratory system
* [DIO2](/source/DIO2), Type II iodothyronine deiodinase, an enzyme involved in the thyroid system

==Vehicles==

===Aircraft===
* [Albatros D.II](/source/Albatros_D.II), a 1916 German fighter aircraft
* [Aviatik (Berg) D.II](/source/Aviatik_(Berg)_D.II), a 1917 Austro-Hungarian fighter prototype
* [STS-55](/source/STS-55) or D2, the second German-sponsored Spacelab mission
* [Daimler D.II](/source/Daimler_D.II), a Daimler aircraft
* [Delta D2](/source/Delta_D2), an Australian diesel-powered helicopter design
* [Dunne D.2](/source/Dunne_D.2), a British Dunne aircraft
* [Euler D.II](/source/Euler_D.II), a 1917 German single-seat fighter
* [Fokker D.II](/source/Fokker_D.II), a WWI German fighter biplane 
* [Halberstadt D.II](/source/Halberstadt_D.II), a 1916 German biplane fighter aircraft
* [Hughes D-2](/source/Hughes_D-2), a 1943 mysterious American fighter and bomber project
* [LFG Roland D.II](/source/LFG_Roland_D.II), a 1917 German single-seat fighter
* [Phönix D.II](/source/Ph%C3%B6nix_D.II), a variant of the Hungarian First World War biplane fighter D.I
* [Schütte-Lanz D.II](/source/Sch%C3%BCtte-Lanz_D.II), a 1915 variant of the German Schütte-Lanz D.I aircraft

===Aircraft engines===
* [Alfa Romeo D2](/source/Alfa_Romeo_D2), a 1931 Italian nine-cylinder radial engine for aircraft use 
* [Mercedes D.II](/source/Mercedes_D.II), a WWI 6-cylinder, liquid-cooled inline aircraft engine

===Locomotives===
* [Bavarian D II](/source/Bavarian_D_II), an 1898 German goods train tank locomotive model
* [Bavarian D II (Ostbahn)](/source/Bavarian_D_II_(Ostbahn)), an 1866 German goods train tender locomotive model
* [Bavarian D II (old)](/source/Bavarian_D_II_(old)), an 1873 small tank locomotive
* GS&WR Class D2, a [Great Southern and Western Railway](/source/Great_Southern_and_Western_Railway) Irish steam locomotive
* [LB&SCR D2 class](/source/LB%26SCR_D2_class), a British locomotive class
* [GNR Class D2](/source/GNR_Class_D2), a class of British steam locomotives 
* [PRR D2](/source/PRR_D2), an 1868 American steam locomotive model

===Ships===
* [HMS ''Attacker'' (D02)](/source/HMS_Attacker_(D02)), a 1941 American-built escort aircraft carrier
* [HMS ''Devonshire'' (D02)](/source/HMS_Devonshire_(D02)), a 1962 County-class destroyer
* [HMS ''Inglefield'' (D02)](/source/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](/source/Char_D2), a French tank
* [Zhidou D2](/source/Zhidou_D2), a Chinese small electric car

== Electronics==
* [Cowon D2](/source/Cowon_D2), a 2007 portable media player with touch screen interface 
* [Datasaab D2](/source/Datasaab_D2), a Swedish concept computer completed in 1960
* ''d2'', a brand of computer peripherals manufactured by the French firm {{Lang|fr|électronique d2}}, now trading as [LaCie](/source/LaCie)
* D2 kit, a microprocessor development kit [MEK6800D2](/source/MEK6800D2)
* [D-2 (video)](/source/D-2_(video)), a professional digital video format
* [DOCSIS 2](/source/DOCSIS_2), a cable modem standard

==Other uses==
* D<sub>2</sub>, the [Codex Claromontanus](/source/Codex_Claromontanus), a 6th-century Greek-Latin uncial manuscript of the New Testament
* D<sub>2</sub>, a [dihedral group](/source/dihedral_group) in group theory
* D<sub>2</sub>, [deuterium](/source/deuterium), an isotope of hydrogen
* D2, an almond-shaped cloud on [Neptune](/source/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](/source/town_and_country_planning_in_the_United_Kingdom)
* D2, the [Double Dragon hacking group](/source/Double_Dragon_(hacking_group))
* [Division II (disambiguation)](/source/Division_II_(disambiguation)), in sports leagues, etc.
* [Marcelo D2](/source/Marcelo_D2) (born 1967), Brazilian rapper
* D2, an abbreviation for [DOCSIS](/source/DOCSIS) 2.0, an international telecommunications standard
* D2 steel, a type of D-Grade [tool steel](/source/tool_steel) with good wear resistance commonly found in shears and high-end knives
* D2, gaming notation for a [2-sided die](/source/Dice), such as a coin
* D2, a standard [paper size](/source/paper_size) between B2 and A1
* [D2 Subway](/source/D2_Subway), a planned Dallas, Texas light rail tunnel
* D2, a route of the [D (SEPTA Metro)](/source/D_(SEPTA_Metro))

==See also==
* [2D (disambiguation)](/source/2D_(disambiguation))
* [DII (disambiguation)](/source/DII_(disambiguation))

{{Letter-Number Combination Disambiguation}}

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Adapted from the Wikipedia article [D2](https://en.wikipedia.org/wiki/D2) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/D2?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.