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 *Air Malta (IATA code KM)

Organisations

*Knights of Malta, Knight of Malta (disambiguation), a Christian order of knighthood *Kriegsmarine, name of the German navy during the Nazi regime *Koninklijke Marine, Dutch name of the Royal Netherlands Navy

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''_M, the Michaelis constant in Michaelis–Menten kinetics *Knowledge management, a range of techniques to identify, represent, and distribute knowledge

Other uses

* KM (wrestler), the ring name of American professional wrestler Kevin Matthew McDonald (born 1983) *Km (hieroglyph) *KM-mount, a Konica camera rangefinder mount *Khmer language (ISO 639 alpha-2 code "km") *KM, a Soviet ground-effect Ekranoplan vehicle, called the "Caspian Sea Monster" *KM, Key Map prefix used by the Houston Map Company and the Houston, City of Houston *Bosnia and Herzegovina convertible mark, currency of Bosnia and Herzegovina *''Krause-Mishler numbers'', catalogue number references for the ''Standard Catalog of World Coins'' by Krause Publications *Krav Maga, a self-defence and hand-to-hand combat system *Kylian Mbappé, French footballer {{disambiguation