H5, H05 or H-5 may refer to:

Science

  • Influenza A virus subtype H5 (disambiguation), all A type viruses containing H5 type of agglutinin
  • Histone H5, a histone similar to Histone H1
  • Haplogroup H5 (mtDNA), a genetics subgroup
  • ATC code H05 Calcium homeostasis, a subgroup of the Anatomical Therapeutic Chemical Classification System
  • British NVC community H5
  • Hydrogen-5 (H-5), an isotope of hydrogen
  • H05, an ICD-10 code for diseases of the eye and adnexa

Technology

  • H5 (chronometer), a 1773 marine chronometer designed by John Harrison
  • DSC-H5, a full-featured-camera made by Sony
  • H5, a hurricane tie manufactured by Simpson Strong-Tie Co
  • .h5, filename extension used in Hierarchical Data Format
  • , level 5 heading markup for HTML web pages
  • Abbreviation for HTML5, especially when used to create mobile-centric web applications or webpages, in contrast to mini-apps on platforms such as WeChat

Transportation

  • H5 Series Shinkansen, a Japanese Shinkansen high-speed train
  • H5 Portway, a road part of the Milton Keynes grid road system, England
  • Rely H5, a Chinese van
  • Hola Airlines (IATA code: H5), a former Spanish airline
  • Magadan Airlines (IATA code: H5), a former Russian airline
  • SAIC H5, a Chinese battery electric and range extender mid-size SUV

Military

  • HMS H5, a 1918 British Royal Navy H-class submarine
  • HMS Greyhound (H05), a 1935 British Royal Navy G-class destroyer
  • HMS Ithuriel (H05), a 1940 British Royal Navy I-class destroyer
  • H-5, a Chinese manufactured variant of the Soviet Ilyushin Il-28 jet bomber
  • Sikorsky H-5, a helicopter
  • USS H-5 (SS-148), a 1918 United States Navy submarine

Other uses

  • H5 (US company), an American electronic discovery company headquartered in San Francisco, California
  • H5 (French company), a French video company
  • H5 (classification), a para-cycling classification

See also

  • Hydrogen-5 (<sup>5</sup>H), an unstable isotope of hydrogen
  • 5H (disambiguation)