KN

KN may stand for:

* Croatian kuna, the official currency of Croatia (currency sign Kn or kn)
* Democratic People's Republic of Korea (NATO country code KN)
* Kannada language (ISO 639-1 language code kn)
* Khuddaka Nikaya, the fifth nikaya (collection) of the Sutta Pitaka division of the Buddhist Pali Canon
* "Kid Nation", a show on CBS.
* "Kieler Nachrichten", a newspaper printed in Kiel, Germany
* Kilonewton (kN), an SI unit of force
* Klein-Nishina formula, a formula for prediction of the angular distribution of x-rays and gamma rays incident upon a single electron
* Knot (speed) (kn), nautical miles per hour
* Knudsen number (Kn), in physics
* Kühne + Nagel, a logistics company
* Saint Kitts and Nevis (ISO 3166-1 alpha-2 country code KN)
* Kilingi-Nõmme, Estonia
* Kohtla-Nõmme, Estonia
* Karksi-Nuia, Estonia