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)
• Kings Dominion, an amusement park located in Doswell, Virginia
• Köln-Düsseldorfer, a river cruise operator based in Cologne, Germany

Science and technology:

• Dissociation constant (K_D), a type of equilibrium constant
• K-d tree, a data structure in computing
• Kienböck's Disease, an avascular necrosis of the lunate bone

Other uses:

• 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
• Kevin Durant, a professional basketball player
• Khaki drill, a fabric used in 20th-century British military uniforms
• Knock-down kit, a kit of part to assemble something
• Known Depredator, an Indian legal term for a petty criminal
• Kraft Dinner, a convenience food product
• Kuwaiti dinar, a currency, sometimes represented "K.D." (ISO code KWD)