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 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, a robotic Star Wars character "D²", a 2002 episode of Dexter's Laboratory D2 (video game), a 1999 game for the Sega Dreamcast D2, an abbreviation of the video game Diablo II or Destiny 2 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 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 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 -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 Dunne D.2, a British Dunne aircraft Euler D.II, a 1917 German single-seat fighter Fokker D.II, a WWI German fighter biplane 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 Hungarian First World War biplane fighter 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 locomotive class