KM, Km, or km may stand for:

Postnominal

  • Knight of the Sovereign Military Order of Malta, a chivalric order

Businesses

  • KM Group, a multimedia group based in Kent
  • Kennis Music, a record label
  • Kia Motors, an automobile manufacturer
  • Kmart (former stock symbol "KM")
  • Konica Minolta, a manufacturer of electronics
  • KM Malta Airlines, the flag carrier of Malta

Organisations

  • Kabataang Makabayan, a youth organization in the Philippines
  • Kerry Militia, military organization of volunteer soldiers from County Kerry in Ireland
  • Knight of Malta (disambiguation), a Christian order of knighthood
  • Kaiserliche Marine, navy of the German Empire
  • Kriegsmarine, name of the German navy during the Nazi regime
  • Koninklijke Marine, Dutch name of the Royal Netherlands Navy
  • Kraljevska mornarica, navy for the Kingdom of Yugoslavia

Places

  • Kamenz (district), Germany (license plate indication)
  • Messenia, Greece (license plate indication)
  • KM Junction, West Virginia
  • Comoros, country (ISO 3166-1 code KM)
  • Kysucké Nové Mesto, town in Slovakia (district code KM)
  • Kosovska Mitrovica, town in Serbia
  • Kosovo and Metohija, an autonomous province in Serbia (ISO 3166-2 code RS-KM)

Science, technology, and mathematics

  • Kilometre (km), SI unit of distance
  • .km, Internet top-level domain (ccTLD) for Comoros
  • Km, an electric motor constant
  • Kaplan–Meier estimator, a non-parametric statistic used to estimate the survival function
  • Kelley–Morse set theory, in mathematics, a set theory
  • Kernel methods, a set of computer science algorithms
  • K<sub>M</sub>, the Michaelis constant in Michaelis–Menten kinetics
  • Knowledge management, a range of techniques to identify, represent, and distribute knowledge

Other uses

  • Kevin Matthews (wrestler), Kevin Matthew McDonald (b. 1983)
  • Km (hieroglyph)
  • KM-mount, a Konica camera rangefinder mount
  • Khmer language (ISO 639 alpha-2 code "km")
  • KM, a Soviet ground-effect vehicle, nicknamed the "Caspian Sea Monster"
  • Bosnia and Herzegovina convertible mark, currency of Bosnia and Herzegovina
  • Krause-Mishler numbers for the Standard Catalog of World Coins