TKD is an abbreviation of Taekwondo, a Korean martial art.
TKD may also refer to:
tkd, the ISO 639-3 code for Tokodede language Takoradi Airport, the IATA code TKD Tughlakabad railway station, the station code TKD The Klingon Dictionary, a book by Marc Okrand describing the Klingon language Transmission Kikuchi diffraction, a method for orientation mapping at the nanoscale Centrale voor Textiel, Kleding en Diamant, a trade union representing workers in various industries in Belgium