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)

Arts & entertainment

• D2: The Mighty Ducks, the second film in The Mighty Ducks trilogy
• D2 (video game), a video game for the Sega Dreamcast
• Descent II, a computer game
• Diablo II, a computer game
• Disgaea 2: Cursed Memories, a video game for the PlayStation 2
• Doom II: Hell on Earth, a video game
• Dota 2, a computer game
• Driver 2, a video game
• R2-D2, a robotic Star Wars character.

Business

• D2 (clothing), a UK Jeans retailing company
• 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
• Levuglandin D2
• Prostaglandin D2 receptor
• Vitamin D₂, or ergocalciferol
• D02 - ICD-10 Chapter II: Neoplasms code for carcinoma in situ of middle ear and respiratory system

Vehicles

Aircraft

• Albatros D.II, a 1916 German fighter aircraft
• Aviatik (Berg) D.II, a 1917 Austro-Hungarian fighter prototype
• Daimler D.II, a Daimler aircraft
• 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, a 1898 German goods train tank locomotive model
• Bavarian D II (Ostbahn), a 1866 German goods train tender locomotive model
• Bavarian D II (old), a 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, a 1868 American steam locomotive model
• SP&S Class D-2, a steam locomotives class

Ships

• HMS Attacker (D02), a 1942 American-built Bogue-class escort aircraft carrier
• HMS Devonshire (D02), a 1962 County-class destroyer
• HMS Inglefield (D02), a 1936 I-class destroyer leader of the British Royal Navy

Motorised wheeled-vehicle

• Char D2, a French tank

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 format), a professional digital video format

Other uses

• D₂, 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 (NCAA), in American collegiate athletics
• Marcelo D2, a 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