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 (5H), an unstable isotope of hydrogen 5H (disambiguation)