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

Places

Dublin 2 Dublin 2, also rendered as D2 and D02, is a historic postal district on the southside of Dublin, Ireland. In the 1960s, this central district became a focus for office development. More recently, it became a focus for urban residential developme ...

, a Dublin, Ireland postcode * D2 motorway (Czech Republic) * D2 road (Croatia), a state route in Croatia * D2 motorway (Slovakia) *

Mount Dulang-dulang Mount Dulang-dulang, dubbed by Filipino mountaineers as "D2" and also known as Mount Katanglad, is the highest elevation peak in the Kitanglad Mountain Range, located in the north central portion of the province of Bukidnon in the island of Min ...

, the second highest mountain of the Philippines * D2, a line of Moscow Central Diameters

Arts & entertainment

* ''D-2'' (mixtape), a 2020 album by South Korean rapper Agust D * '' D2: The Mighty Ducks'', the second film in ''The Mighty Ducks'' trilogy *

R2-D2 R2-D2 () or Artoo-Detoo is a fictional robot character in the ''Star Wars'' franchise created by George Lucas. He has appeared in ten of the eleven theatrical ''Star Wars'' films to date. At various points throughout the course of the films, R2, ...

, a robotic ''Star Wars'' character * " D²", a 2002 episode of ''Dexter's Laboratory'' * ''D2'', a 1999 video game for the Sega Dreamcast * ''D2'', an abbreviation of the video game ''

Diablo II ''Diablo II'' is an action role-playing hack-and-slash video game developed by Blizzard North and published by Blizzard Entertainment in 2000 for Microsoft Windows, Classic Mac OS, and macOS. The game, with its dark fantasy and horror the ...

'' or ''

Destiny 2 ''Destiny 2'' is a free-to-play online-only multiplayer first-person shooter video game developed by Bungie. It was originally released as a pay to play game in 2017 for PlayStation 4, Xbox One, and Windows. It became free-to-play, utilizing th ...

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'' (magazine), published by ''Dagens Næringsliv'' * D2, the IATA code for Damania Airways

Biology or medicine

ATC code D02 D02A Emollients and protectives D02AA Silicone products D02AB Zinc products D02AC Soft paraffin and fat products D02AD Liquid plasters D02AE Carbamide products :D02AE01 Carbamide :D02AE51 Carbamide, combinations D02AF Salicylic acid prepa ...

''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 Resolvins are specialized pro-resolving mediators (SPMs) derived from omega-3 fatty acids, primarily eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), as well as docosapentaenoic acid (DPA) and clupanodonic acid. As autacoids similar ...

Cyclin D2 G1/S-specific cyclin-D2 is a protein that in humans is encoded by the ''CCND2'' gene. Function The protein encoded by this gene belongs to the highly conserved cyclin family, whose members are characterized by a dramatic periodicity in prot ...

(CCND2) * Vitamin D₂, or

ergocalciferol Ergocalciferol, also known as vitamin D2 and nonspecifically calciferol, is a type of vitamin D found in food and used as a dietary supplement. As a supplement it is used to prevent and treat vitamin D deficiency. This includes vitamin D defici ...

* D02, the ICD-10 code for carcinoma in situ of middle ear and respiratory system *

DIO2 Type II iodothyronine deiodinase (''iodothyronine 5'-deiodinase'', ''iodothyronine 5'-monodeiodinase'') is an enzyme that in humans is encoded by the ''DIO2'' gene. Function The protein encoded by this gene belongs to the iodothyronine deiodi ...

, Type II iodothyronine deiodinase, an enzyme involved in the thyroid system

Vehicles

Aircraft

* D.II, a 1916 German fighter aircraft * (Berg) D.II, a 1917 -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 * D.2, a aircraft * DFW , a Deutsche aircraft * Dunne D.2, a British Dunne aircraft * Euler D.II, a 1917 German single-seat fighter *

Fokker D.II __NOTOC__ The Fokker D.II was a German fighter biplane of World War I. It was a single-seat fighter aircraft developed before the Fokker D.I. It was based on the M.17 prototype, with single-bay unstaggered wings and a larger fuselage and short ...

, a WWI German fighter biplane * D.II, a aircraft * D.II, a 1916 German biplane fighter aircraft *

Hughes D-2 The Hughes D-2 was an American fighter and bomber project begun by Howard Hughes as a private venture. It never proceeded past the flight testing phase but was the predecessor of the Hughes XF-11. The sole D-2 was completed in 1942–1943. De ...

, a 1943 mysterious American fighter and bomber project

Roland D.II The LFG Roland D.II was a German single-seat fighter of World War I. The type was manufactured by Luftfahrzeug Gesellschaft, and also by Pfalz Flugzeugwerke under license. Design and development The D.II used a plywood monocoque fuselage. Tw ...

, a 1917 German single-seat fighter * D.II, a variant of the -Hungarian First World War biplane fighter D.I * - D.II, a 1915 variant of the German - D.I aircraft

Aircraft engines

Alfa Romeo D2 The Alfa Romeo D2 was a nine-cylinder radial engine for aircraft use produced in Italy. It was typically rated between 240 and 270 hp. The engine was designed by Vittorio Jano, 600 units were produced between 1931 and 1934. This engine was a ...

, a 1931 Italian nine-cylinder radial engine for aircraft use *

Mercedes D.II The Mercedes D.II was a six-cylinder, SOHC valvetrain liquid-cooled inline aircraft engine built by Daimler during the early stages of World War I. Producing about 110 to 120 hp, it was at the low-end of the power range of contemporary eng ...

, 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

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 * , a 1909 American submarine

Other vehicles

Char D2 The Char D2 was a French medium tank of the interwar period. In 1930, at a time the Char D1 had not even entered production, the Renault company agreed to build a better armoured version called the Char D2. By not using old-fashioned rivets, it ...

, a French tank

Electronics

* Cowon D2, a 2007 portable media player with touch screen interface *

Datasaab D2 200px, Datasaab D2 computer at IT-ceum 200px, Front panel D2 was a concept and prototype computer designed by Datasaab in Linköping, Sweden. It was built with discrete transistors and completed in 1960. Its purpose was to investigate the feasi ...

, a Swedish concept computer completed in 1960 * ''d2'', a brand of computer peripherals manufactured by the French firm électronique d2, now trading as

LaCie LaCie (; English: "The Company") is an American-French computer hardware company specializing in external hard drives, RAID arrays, optical drives, Flash Drives, and computer monitors. The company markets several lines of hard drives with a ...

* ''D2 kit'', a microprocessor development kit MEK6800D2 *

D-2 (video) D-2 is a professional digital videocassette format created by Ampex and introduced in 1988 at the NAB Show as a composite video alternative to the component video D-1 format. It garnered Ampex a technical Emmy in 1989. Like D-1, D-2 stores u ...

, a professional digital video format * DOCSIS 2, a cable modem standard

Other uses

* D₂, the Codex Claromontanus, a 6th-century Greek-Latin uncial manuscript of the New Testament * D₂, a

dihedral group In mathematics, a dihedral group is the group of symmetries of a regular polygon, which includes rotations and reflections. Dihedral groups are among the simplest examples of finite groups, and they play an important role in group theory, ...

in group theory * ''D₂'',

deuterium Deuterium (or hydrogen-2, symbol or deuterium, also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the other being protium, or hydrogen-1). The nucleus of a deuterium atom, called a deuteron, contains one proton and one ...

, an isotope of hydrogen * ''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 Town and country planning in the United Kingdom is the part of English land law which concerns land use planning. Its goal is to ensure sustainable economic development and a better environment. Each country of the United Kingdom has its own ...

* Division II (disambiguation), in sports leagues, etc. *

Marcelo D2 Marcelo Maldonado Peixoto (born November 5, 1967), also known as Marcelo D2, is a Brazilian rapper and singer. Biography A former vocalist of the band Planet Hemp, he started his solo career in 1998 with the album ''Eu Tiro É Onda.'' The al ...

(born 1967), Brazilian rapper * D2, an abbreviation for

DOCSIS Data Over Cable Service Interface Specification (DOCSIS) is an international telecommunications standard that permits the addition of high-bandwidth data transfer to an existing cable television (CATV) system. It is used by many cable televisio ...

2.0, an international telecommunications standard * D2 steel, a type of D-Grade

tool steel Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. Their suitability comes from their distinctive har ...

with good wear resistance commonly found in shears and high end knives * D2, gaming notation for a 2-sided die, such as a coin * D2, a standard

paper size Paper size standards govern the size of sheets of paper used as writing paper, stationery, cards, and for some printed documents. The ISO 216 standard, which includes the commonly used A4 size, is the international standard for paper size. I ...

between B2 and A1 *

D2 Subway D2 Subway is a proposed expansion of the DART Light Rail system in metropolitan Dallas, Texas, in the United States. The subway would run from the existing Victory station, tunneling underground through the central business district of downtow ...

, a planned Dallas, Texas light rail tunnel