KH

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_H, 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 [x], but sometimes [kʰ]
• 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