KN or kn may refer to:

Companies

  • Kia (2021 logo often misread as KN), a South Korean multinational automobile manufacturer
  • Kieler Nachrichten, the only German-language newspaper published in Kiel, Germany
  • Kuehne + Nagel, a global transport and logistics company
  • K&N Engineering, manufacturer of car parts and consumables

Language

  • Kannada (ISO 639-1 code), a Dravidian language
  • , the Latin-script digraph used in English to write the word-initial sound

Science

  • Complete graph (), a simple undirected graph in which every pair of distinct vertices is connected by a unique edge
  • Kilonewton (kN), a common expression of forces measured in newtons (N)
  • Knot (unit), a unit of speed equal to one nautical mile per hour
  • Knudsen number (Kn), a dimensionless number

Other uses

  • .kn, the Internet country code top-level domain for Saint Kitts and Nevis
  • Croatian kuna (kn), the currency of Croatia from 30 May 1994 until 31 December 2022
  • KN number, used by the United States for describing North Korean missiles
  • Saint Kitts and Nevis (ISO 3166 code), an island country and microstate
  • Kelly's Navy, referring to John Kelly Limited fleet, and book under the same name
  • Kitchen Nightmares, an American reality television series
  • Ramsay's Kitchen Nightmares, the original British version of the show
  • Various other international editions: see Ramsay's Kitchen Nightmares § International versions