FKT may refer to:
- The FKT algorithm, named after Fisher, Kasteleyn, and Temperley
- FK Tønsberg, Norwegian football club
- Fahndungs- und Kontrolltrupp, the Bavarian Border Police's Search and Inspection Force
- Falkland Islands Time, a former time zone for the Falkland Islands
- Fastest Known Time, unofficial running records for trails and routes.
- Fellow of the Korea Federation of Talent, a fellowship and level of membership of the Korea Federation of Talent.