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

Science and technology edit

Biochemistry and medicine edit

Technology edit

  • Nikon D1, a digital single-lens reflex camera
  • D1, former brand of T-Mobile in Germany
  • D1, an abbreviation for DOCSIS 1.0 1.0, an international telecommunications standard
  • D-1 (Sony), an early digital video recording format
  • STS-61-A, also known as D-1, the 22nd mission of NASA's Space Shuttle program
  • D-1, from the Proton (rocket family), Russian rockets
  • Mercedes D.I, a 1913 German aircraft engine

Military edit

World War I fighter aircraft edit

Other uses in military edit

Transportation edit

Locomotives and trams edit

Roads edit

Other uses in transportation edit

Sports edit

  • NCAA Division I, D-I, the highest division of American collegiate athletics
  • D1 Grand Prix, a production car drifting series from Japan
  • D1NZ, a production car drifting series in New Zealand

Other uses edit

See also edit