O1

O1 or O-1 may refer to:

Aircraft

  • O-1 Bird Dog, an observation aircraft manufactured by Cessna
  • O-1 Curtiss Falcon, an observation aircraft manufactured by the Curtiss Aircraft Company
  • O-1 Airship, an Italian manufactured semi-rigid airship operated by the US Navy

Music

Military

Science and technology

Other

  • O-1 visa, a variety of the U.S. O visa, allowing for temporary immigration for work purposes for individuals of extraordinary ability or achievement in certain areas
  • Otoyol 1, a motorway in Turkey
  • Ö1, an Austrian radio station
  • O1 Communications, Inc., a California telecommunications company
  • Orchestra ONE (O1), an experimental youth orchestra based in Maidstone, United Kingdom
  • GNR Class O1, a class of British 2-8-0 steam locomotive designed by Nigel Gresley (later redesignated Class O3)
  • LNER Thompson Class O1, a class of British 2-8-0 steam locomotive designed by Edward Thompson and rebuilt from Class O4

See also

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