KH, kh, Kh or kH may refer to:

Places

  • Cambodia (Kampuchea, Kambuja, Srok Khmer), a sovereign state with ISO 3166-2 alpha code KH
  • .kh, the Internet country code top-level domain for Cambodia
  • Kutná Hora District, Czech Republic (vehicle plate code)
  • Kyustendil, Bulgaria (vehicle plate code)
  • Bad Kreuznach, Germany (vehicle plate code)
  • Borehamwood, Great Britain (vehicle plate code)
  • Evrytania, Greece (vehicle plate code)

Science and technology

  • KH (hardness), a measure of the hardness of water (calcium carbonate concentration)
  • Kh factor, a constant used in electrical metering
  • Henry's law, constant (K<sub>H</sub>), in thermodynamics
  • Kelvin–Helmholtz instability, a phenomenon of fluid mechanics
  • Key Hole (KH), series of imaging satellites used by various United States agencies
  • Khornerstone, a computer benchmark used in periodicals such as UNIX Review
  • Kurepa hypothesis, in mathematical set theory
  • Potassium hydride, chemical formula KH
  • Missiles etc. designated Kh-nn, Originally X-nn with Latin X for experimental, later interpreted as Cyrillic X transcribed as Kh (or sometimes H) see List of NATO reporting names for air-to-surface missiles.

Other uses

  • Kata'ib Hezbollah, part of the armed forces of Iraq
  • Kh (digraph), in English transliteration from numerous foreign languages, usually represents , but sometimes
  • A knight of the Royal Guelphic Order (KH)
  • The King's Hospital, school in Ireland
  • Kh (tramcar), the class of double axled high-floor tramcars
  • Kamal Haasan, Indian actor and filmmaker, sometimes abbreviated as KH in film titles (cf. KH 233)
  • Kalevi Heikkinen (1911–1940), Finnish war correspondent whose pen name was KH
  • Central Kalimantan (vehicle registration prefix KH)