KD

KD and variants may refer to:

Businesses and organizations

 * KD Avia, a former Russian airline (IATA code KD)
 * KD Transportation Group, a South Korean bus company
 * Kalstar Aviation (IATA code KD)
 * Kappa Delta, a National Panhellenic sorority
 * Kendell Airlines, a former Australian airline (IATA code KD)
 * Keolis Downer, an Australian public transport operator
 * Kings Dominion, an amusement park located in Doswell, Virginia
 * Koleje Dolnośląskie, a Polish rail operator
 * Köln-Düsseldorfer, a river cruise operator based in Cologne, Germany
 * Stock ticker symbol for Kyndryl Holdings, an IT services company based in New York City

Science and technology

 * Dissociation constant (KD), a type of equilibrium constant
 * K-d tree, a data structure in computing
 * Kawasaki disease, an inflammatory disease causing vasculitis and sometimes aneurysm
 * Kienböck's disease, an avascular necrosis in the lunate bone of the wrist
 * Toyota KD Engine, a engine manufactured by Toyota
 * Gene knockdown, a genetic modification technique

Other uses

 * K.D., a 2019 Indian Tamil-language film
 * KD Station, a meat packing plant, later business and entertainment complex, in Sioux City, Iowa, US
 * Kapal DiRaja, a ship prefix used in the Royal Malaysian Navy
 * Katamari Damacy, a PlayStation 2 video game
 * Kentucky Deluxe, a brand of American whiskey
 * k.d. lang, a Canadian pop singer-songwriter
 * Kevin Durant, a professional basketball player
 * Kuldeep Yadav, Indian cricketer
 * Krisdayanti, an Indonesian singer and actress
 * K?d, an American DJ and record producer
 * Christian Democrats (Sweden), a Swedish political party
 * Christian Democrats (Finland), a Finnish political party
 * Khaki drill, a fabric used in 20th-century British military uniforms
 * Knock-down kit, a kit of part to assemble something
 * Kraft Dinner, a convenience food product
 * Kuwaiti dinar, a currency, sometimes represented "K.D." (ISO code KWD)
 * Kill-death ratio, a statistic in player-versus-player combat multiplayer video games