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 (KH, 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
 * Khouria, an Arabic title of honor for the wife of a priest
 * Kingdom Hall
 * Kingdom Hearts, a Disney and Square Enix video game series
 * Kingdom Hearts (video game), the first game in the series
 * 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 (born 1954), Indian actor, often abbreviated as simply KH