H1, H-1, H01, H I may refer to:

Places

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Science

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Technology

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  • <h1></h1>, level 1 heading markup for HTML Web pages; see HTML element
  • DSC-H1, a Sony Cybershot digital camera
  • H1, John Harrison's first marine chronometer
  • Tianwen-1 (formerly Huoxing-1), first Chinese space probe to reach Mars
  • H-1NF, the Australian Plasma Fusion Research Facility, formerly H-1 Heliac stellarator

Transportation

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  • H1 Lamp, an automotive halogen light bulb
  • H-I or H–1, a Japanese rocket
  • Rocketdyne H-1, a liquid-propellant rocket engine

Aviation

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Motor vehicles

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Motorcycles

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Ships

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  • HMS H1, a 1915 British Royal Navy H-class submarine
  • HMS Hotspur (H01), a 1935 British Royal Navy H-class destroyer
  • USS H-1, a 1913 United States Navy submarine

Rail

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Time

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  • H1 may refer to the first half of the business year, while H2 refers to the second half.

Other uses

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See also

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