H1, H-1, H01, H I may refer to:
Transportation, places, sports, and astronomy
Roads, automotive, and biking
Interstate H-1, a highway in Hawaii H1 Lamp, an automotive halogen light bulb Haval H1, a Chinese subcompact crossover Hummer H1, an American full-size SUV Hyundai H-1, a South Korean commercial van Tiger H1, a German heavy tank used during WW2 Kawasaki H1 Mach III, road motorcycle Kawasaki H1R, racing motorcycle H1 (classification), a para-cycling classification
Water sports and vehicles H1 Unlimited, a premier unlimited hydroplane racing league 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 Ceylon Government Railway H1, a class of steam locomotives LB&SCR H1 class, a class of British steam locomotives LNER Class H1, a class of British steam locomotives Designation for METRORail Siemens S70 light rail vehicles
Aviation Bell Huey family Bell H-1, series of helicopters with that designation Hooters Air airline Hughes H-1 Racer, a racing aircraft
Space exploration H I region, a cloud in the interstellar medium H-I or H–1, a Japanese rocket Rocketdyne H-1, a liquid-propellant rocket engine Tianwen-1 (formerly Huoxing-1), first Chinese space probe to reach Mars
Other places Area H1, the area of Hebron controlled by the Palestinian Authority under the Hebron Protocol
Computing and electronics , level 1 heading markup for HTML Web pages; see HTML element Unitree H1, a humanoid robot developed by Unitree Robotics DSC-H1, a Sony Cybershot digital camera
Science
Alternative hypothesis (H1)
Biology and medicine British NVC community H1, a heath zone Histamine H1 receptor Histone H1, a protein Haplogroup H1 (disambiguation), a grouping in genetics based on certain similarities ATC code H01 Pituitary and hypothalamic hormones and analogues, a subgroup of the Anatomical Therapeutic Chemical Classification System
Chemistry and physics Hydrogen atom (H1) Protium (isotope), an isotope of hydrogen H-1NF, the Australian Plasma Fusion Research Facility, formerly H-1 Heliac stellarator H1 (particle detector)
Time and date H1, John Harrison's first marine chronometer H1 may refer to the first half of the business year, while H2 refers to the second half.
Other uses , one of the three laryngeals in the reconstructed Proto-Indo-European language Hora Um da Notícia, a news program aired by Rede Globo
See also
Hello Internet (HI), a podcast H-1B visa HI (disambiguation) HL (disambiguation) 1H (disambiguation) H (disambiguation) 1 (disambiguation)