TKD (disambiguation)

TKD may refer to:
 * Taekwondo, a Korean martial art
 * 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