D1, D01, D.I, D.1 or D-1 can refer to:

Science and technology

Biochemistry and medicine

ATC code D01 D01A Antifungals for topical use D01AA Antibiotics :D01AA01 Nystatin :D01AA02 Natamycin :D01AA03 Hachimycin :D01AA04 Pecilocin :D01AA06 Mepartricin :D01AA07 Pyrrolnitrin :D01AA08 Griseofulvin :D01AA20 Antibiotics in combination with corticosteroi ...

''Antifungals for dermatological use'', a subgroup of the Anatomical Therapeutic Chemical Classification System * Dopamine receptor D₁, a protein *

Haplogroup D1 (Y-DNA) Haplogroup D1 or D-M174 is a subclade of haplogroup D-CTS3946. This male haplogroup is found primarily in East Asia, Magars, Magar-ethnic Nepal and the Andaman Islands. It is also found regularly with lower frequency in Central Asia, North Asia a ...

* Vitamin D₁, a form of

Vitamin D Vitamin D is a group of structurally related, fat-soluble compounds responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, along with numerous other biological functions. In humans, the most important compo ...

* DI,

Iodothyronine deiodinase Iodothyronine deiodinases ( and ) are a subfamily of deiodinase enzymes important in the activation and deactivation of thyroid hormones. Thyroxine (T4), the precursor of 3,5,3'-triiodothyronine (T3) is transformed into T3 by deiodinase activity ...

type I, an enzyme involved with thyroid hormones

Technology

Nikon D1 The Nikon D1 is a digital single-lens reflex camera (DSLR) that was made by Nikon Corporation introduced on June 15, 1999. It features a 2.7-megapixel image sensor, 4.5-frames-per-second continuous shooting, and accepts the full range of Nikon F ...

, a digital single-lens reflex camera * D1, former brand of

T-Mobile T-Mobile is the brand of telecommunications by Deutsche Telekom Deutsche Telekom AG (, ; often just Telekom, DTAG or DT; stylised as ·T·) is a partially state-owned German telecommunications company headquartered in Bonn and the largest telec ...

in Germany * D1, an abbreviation for DOCSIS 1.0 1.0, an international telecommunications standard *

D-1 (Sony) D-1 or 4:2:2 Component Digital is an SMPTE digital recording video standard, introduced in 1986 through efforts by SMPTE engineering committees. It started as a Sony and Bosch – BTS product and was the first major professional digital v ...

, an early digital video recording format *

STS-61-A STS-61-A (also known as Spacelab D-1) was the 22nd mission of NASA's Space Shuttle program. It was a scientific Spacelab mission, funded and directed by West Germany – hence the non-NASA designation of D-1 (for Deutschland-1). STS-61-A was th ...

, also known as D-1, the 22nd mission of NASA's Space Shuttle program * D-1, from the

Proton (rocket family) Proton (, formal designation: UR-500) is an expendable launch system used for both commercial and Russian government space launches. The first Proton rocket was launched in 1965. Modern versions of the launch system are still in use , making it ...

, Russian rockets * Mercedes D.I, a 1913 German aircraft engine

Military

World War I fighter aircraft

* AEG D.I * Albatros D.I * Halberstadt D.I, experimental version of Halberstadt D.II (and Aviatik D.I variant) * Aviatik (Berg) D.I * Daimler D.I *

Deutsche Flugzeug-Werke Deutsche Flugzeug-Werke, usually known as DFW, was a German aircraft manufacturer of the early twentieth century. It was established by Bernhard Meyer and Erich Thiele at Lindenthal in 1910, and initially produced Farman designs under licence, ...

D.I *

Euler D.I The Euler D.I was a German single-seat fighter based on the French Nieuport 11. After seeing the success of the French Nieuport 11 at the front, German designer August Euler set about to create a German aircraft based on the Nieuport design. Th ...

* Flugzeugbau Friedrichshafen D.I * Fokker D.I * Hansa-Brandenburg D.I * Junkers D.I * Knoller D.I, an

Imperial and Royal Aviation Troops The Austro-Hungarian Aviation Troops or Imperial and Royal Aviation Troops ( or , ) were the air force of the Austro-Hungarian Empire until the empire's dissolution in 1918; it saw combat on both the Eastern Front and Italian Front dur ...

aircraft * Phönix D.I * Schütte-Lanz D.I * Siemens-Schuckert D.I * WKF D.I, an

aircraft

Other uses in military

Char D1 The Char D1 was an Interwar period, Interwar French light tank. The French plan of 1926, calling for the creation of a Tanks in France#Inter War, Light Infantry Support Tank, led to the development of the existing Renault NC1 prototype into the ...

, a 1930s French tank * Dewoitine D.1, a 1920s French single-seat fighter aircraft * Dunne D.1, a 1907 British experimental aircraft *

152 mm howitzer M1943 (D-1) The 152 mm howitzer M1943 (D-1) () is a Soviet World War II-era 152.4 mm howitzer. The gun was developed by the design bureau headed by F. F. Petrov in 1942 and 1943, based on the carriage of the 122 mm howitzer M1938 (M-30) and using the b ...

, a Soviet World War II artillery system * , British early 20th century submarine * , a 1909 American submarine

Transportation

Locomotives and trams

* D1-class, a variant of

D-class Melbourne tram The D-class Melbourne tram is a fleet of Low-floor tram, low-floor Siemens Combino, Combino trams that operate on the Trams in Melbourne, Melbourne tram network. They were built by Siemens Mobility, Siemens in Uerdingen, Krefeld, Germany, and a ...

* D1 multiple unit, a train built in 1960s-1980s in Hungary for Soviet railways * LB&SCR D1 class, an 1873 British tank locomotive * NCC Class D1, a

Northern Counties Committee The Northern Counties Committee (NCC) was a railway that served the north-east of Ireland. It was built to Irish gauge () but later acquired a number of narrow gauge lines. It had its origins in the Belfast and Ballymena Railway which opened ...

Irish gauge steam locomotive * Pennsylvania Railroad class D1, an 1868 American steam locomotive * Bavarian D I, an 1871 Bavarian tank locomotive * Min'an Electric D01, a sports luxury vehicle

Roads

D1 road (Croatia) The state road D1 () is a national highway in Croatia. It is a one-lane highway that spans from Macelj border crossing in the north via Krapina, Zagreb, Karlovac, Slunj, Gračac, Knin, Sinj, ending in Split (city), Split. It is lo ...

D1 motorway (Czech Republic) The D1 motorway () is the main motorway of the Czech Republic. It routes from Prague to Brno and on to the Polish border, although there is currently a small section still under construction. Once completed its length will be . It is the busie ...

* D1 motorway (Slovakia)

Other uses in transportation

* D1, a model of

BSA Bantam The BSA Bantam is a Two-stroke engine, two-stroke unit construction motorcycle that was produced by the Birmingham Small Arms Company (BSA) from 1948 (as a 123 cc) until 1971 (as a 173 cc). Exact production figures are unknown, but it ...

British motorcycle * D1, a commuter rail line of

Moscow Central Diameters Moscow Central Diameters (MCD) () is a system of off-street Commuter rail, passenger rail transport lines in the Moscow metropolitan area, Moscow agglomeration, created at the turn of the Moscow Railway, Moscow railway. In the media and Advertisin ...

D1 Denby Darts D1 Denby Darts is a bus route, operated by Team Pennine that runs between Denby Dale and Huddersfield via Clayton West, Skelmanthorpe and Kirkburton. History In April 2019, two local councillors complained about the service, then numbe ...

, a bus service in Yorkshire, UK * BYD D1, an electric multi purpose vehicle (MPV)

Sports

NCAA Division I NCAA Division I (D-I) is the highest division of intercollegiate athletics sanctioned by the National Collegiate Athletic Association (NCAA) in the United States, which accepts players globally. D-I schools include the major collegiate athlet ...

, D-I, the highest division of American collegiate athletics *

D1 Grand Prix The , abbreviated as D1GP and subtitled ''Professional Drift'', is a production car drifting series from Japan. After several years of hosting amateur drifting contests, Daijiro Inada, founder of '' Option'' magazine and Tokyo Auto Salon, and ...

, a production car drifting series from Japan * D1NZ, a production car drifting series in New Zealand

Other uses

* D1 (building), a residential building in Dubai * D1 (Longs Peak), a technical climbing route in Colorado, U.S. * D1, a Dublin postal district * D1, a guitar model by C. F. Martin & Company * D1, a code in

Town and country planning in the United Kingdom Town and country planning in the United Kingdom is the part of UK 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 planni ...

* D1, a transmitter equipped juvenile female bald eagle from the 2011 clutch of the Decorah Bald Eagles *D1, a

discount store Discount stores offer a retail format in which products are sold at prices that are in principle lower than an actual or supposed "full retail price". Discounters rely on bulk purchasing and efficient distribution to keep down costs. Types (Uni ...

chain from Colombia. *

D-1 visa The D-1 visa is a non-immigrant visa which allows travel to the United States for those serving as a crewman on marine vessel or aircraft, who will depart the US on the same vessel on which they arrived. Those who will depart on a different vessel ...

, a non-immigrant U.S. visa * "D-1", a song from ''Yves'' (single) by Loona * D1 Recordings, an Irish independent techno record label * D01, ECO code for the Richter-Veresov Attack chess opening *

Digital One Digital One is a national commercial digital radio multiplex in the United Kingdom, owned by Arqiva. , the multiplex covered more than 90% of the population from 137 transmitters. Coverage was extended to Northern Ireland in July 2013. It conta ...

- also known as D1 National, a digital radio multiplex in the United Kingdom * ''

Dhoom ''Dhoom'' (transl. ''Blast'') is a 2004 Indian Hindi-language motorcycle, moto action film directed by Sanjay Gadhvi and produced by Aditya Chopra under the banner of Yash Raj Films. The story was written by Chopra with a screenplay by Vijay Kr ...

'', a 2004 Indian Hindi-language action film by Sanjay Gadhvi, first part of the Dhoom film series * Diablo, a 1997 action role-playing video game by Blizzard Entertainment