AK

AK or A.K. may refer to:

Arts and entertainment

A.K. (film), a 1985 film directed by Chris Marker
AK (radio program), a weekly program produced by Alaska Public Radio Network from 2003 to 2008, later a segment on Alaska News Nightly
AK (rapper), also known as AK the Razorman, American rapper from Atlanta, Georgia, member of hip hop group P$C
AK-47 (rapper), American rapper from Chicago, Illinois, member of hip hop group Do or Die
AK the Savior, American rapper from Brooklyn, New York, member of The Underachievers
Arknights, the Chinese mobile game developed by Hypergryph
Ajith Kumar, Indian actor, commonly referred to as AK
Ananda Krishnan, Malaysian broadcast and telecommunications businessman
Anil Kapoor, Indian actor, often referred to simply as AK
- AK vs AK, 2020 Indian film by Vikramaditya Motwane about Kapoor
Ayushmann Khurrana, Indian actor and singer

AK Press, a collectively owned and operated independent publisher and book distributor that specializes in radical and anarchist literature
AK Steel Holding Company, a US-based S&P 500 (NYSE:AKS) Steel Manufacturer
Adalet ve Kalkınma Partisi, the Turkish Justice and Development Party
Arbeiterkammer, the Austrian Chamber of Labour
Armia Krajowa (Home Army), underground resistance in Nazi-occupied Poland during World War II
Ajnad al-Kavkaz, a Chechen-led militia in the Syrian Civil War

AK, the herbarium code for Auckland War Memorial Museum
Patient AK, a 16-year-old female patient who laughed when her brain was stimulated with electric current during treatment for epilepsy
Actinic keratosis, a skin condition
Applied kinesiology, a method using manual muscle testing that purportedly gives feedback on the functional status of the body

AirAsia (IATA code AK), a Malaysia-based airline
A US Navy hull classification symbol: Dry cargo ship (AK)
New Zealand AK class carriage passenger carriages used by KiwiRail on their Great Railway Journeys of New Zealand

Akan language (ISO 639-1 code alpha-2 ak)
Kalashnikov rifle (Avtomat Kalashnikova) an originally Soviet/Russian series of rifles, e.g. AK-47, AKM, AK-74, AK-101, AK-103, etc.
- AK-47, shortened to "AK"
Knight of the Order of Australia, awarded from 1976 to 1986, and 2014 to 2015
Aktuaalne kaamera, a TV program of the Eesti Televisioon
Armia Krajowa, the primary resistance movement in German-occupied Poland during World War II