KNK

KNK may refer to:


 * Kara no Kyōkai, a light novel series by Kinoko Nasu
 * KNK (band), South Korea
 * Library of Congress Classification KNK for Law of Brunei
 * Northern Kentucky University Herbarium
 * Kuranko language of Sierra Leone, ISO 639 code
 * ISO 3166-2 code KN-K, for St. Kitts
 * Konferenz Nationaler Kultureinrichtungen, Conference of National Cultural Institutions, East Germany
 * German KNK series of breeder reactors
 * National Convergence "Kwa Na Kwa", Central African Republic political party
 * Il-Kunsill Nazzjonali tal-Ktieb, the Maltese-language name of Malta's National Book Council
 * Kurdistan National Congress