D7, D07, D.VII, D VII, D.7 or D-7 may refer to:

Arts and entertainment

* D⁷, a chord (music) * D7, a note in the

whistle register The whistle register (also called the flute register or flageolet register) is the highest register of the human voice, lying above the modal register and falsetto register. This register has a specific physiological production that is different f ...

* ''D-7'' (Wipers song), a song by the Wipers from the 1980 album '' Is This Real?'' ** Covered by Nirvana on the 1992 album '' Hormoaning'' * ''D-7'', a fictional ''Star Trek'' Klingon starship class

Businesses and organisations

* Dinar Líneas Aéreas (1992–2002), IATA airline designator D7 *

AirAsia X AirAsia X (previously known as ''FlyAsianXpress Sdn. Bhd.''), is a long-haul budget airline based in Malaysia, and a sister company of AirAsia. It commenced operations on 2 November 2007 with its first service flown from Kuala Lumpur Internat ...

, IATA airline designator D7 * Digital 7, a group of national governments seeking to strengthen the digital economy

Places

* D7 road (Croatia), a state road * D7 motorway (Czech Republic) * A Dublin postal district

Science, technology and mathematics

Military

D.VII aircraft (disambiguation) D.VII aircraft may refer to: World War I German fighters * Fokker D.VII * LFG Roland D.VII * Albatros D.VII * Pfalz D.VII * Aviatik D.VII * Schütte-Lanz D.VII * Kondor D.VII Modern replicas * Airdrome Fokker D-VII *Loehle Fokker D-VII *World War ...

, a number of aircraft **

Fokker D.VII The Fokker D.VII was a German World War I fighter aircraft designed by Reinhold Platz of the Fokker-Flugzeugwerke. Germany produced around 3,300 D.VII aircraft in the second half of 1918. In service with the ''Luftstreitkräfte'', the D.VII qui ...

, a German World War I fighter aircraft * HMS ''Patroller'' (D07), a 1943 British Royal Navy escort aircraft carrier * HMS ''D7'', a Royal Navy submarine launched in 1911

Transportation and vehicles

Bavarian D VII The locomotives of the Bavarian Class D VII were saturated steam locomotives of the Royal Bavarian State Railways (''Königlich Bayerische Staatsbahn''). The D VII was built, in parallel with the D VI, as a six-coupled locomotive for hilly rou ...

, an 1880 German steam locomotive model *

Caterpillar D7 The Caterpillar D7 is a medium track-type tractor manufactured by Caterpillar Inc. and most commonly used as a bulldozer. The D7 was first manufactured in 1938. A series of improved models were later produced, including the D7C in 1955, th ...

, a 1938 medium bulldozer *

Dewoitine D.7 The Dewoitine D.7 was a French sport plane built in the mid 1920s. Development The D.7 was a conventionally laid-out monoplane, with a thick cantilever shoulder wing. Its single seat, open cockpit, provided with a small windscreen, was over t ...

, a 1920s French sport plane *

Pennsylvania Railroad class D7 Class D7 (formerly Class A (anthracite), pre-1895) on the Pennsylvania Railroad was a class of 4-4-0 steam locomotive. Fifty-eight were built by the PRR's Altoona Works (now owned by Norfolk Southern) between 1882–1891 with drivers, while sixt ...

, a steam locomotive *

ATS D7 The ATS D7 was a Formula One racing car used by Team ATS in the 1984 Formula One season. The car was designed by Gustav Brunner and was driven for most of the season by German Manfred Winkelhock. He was joined in a second car late in the season b ...

, a Formula One racing car *D7 Super, a

BSA Bantam The BSA Bantam is a two-stroke unit construction motorcycle that was produced by the Birmingham Small Arms Company (BSA) from 1948 (as a 125 cc) until 1971 (as a 175 cc). Exact production figures are unknown, but it was over 250,000 a ...

motorcycle

Other

ATC code D07 D07A Corticosteroids, plain D07AA Corticosteroids, weak (group I) :D07AA01 Methylprednisolone :D07AA02 Hydrocortisone :D07AA03 Prednisolone D07AB Corticosteroids, moderately potent (group II) :D07AB01 Clobetasone :D07AB02 Hydrocortisone butyr ...

, ''Corticosteroids, dermatological preparations'', a subgroup of the Anatomical Therapeutic Chemical Classification System *

D7 polytope In 7-dimensional geometry, there are 95 uniform polytopes with D7 symmetry; 32 are unique, and 63 are shared with the B7 symmetry. There are two regular forms, the 7-orthoplex, and 7-demicube with 14 and 64 vertices respectively. They can be vi ...

, in 7-dimensional geometry * d⁷, a

d electron count The d electron count is a chemistry formalism used to describe the electron configuration of the valence electrons of a transition metal center in a coordination complex. The d electron count is an effective way to understand the geometry and rea ...