FSK

FSK may refer to:

FSK (band), a German band
Federal Counterintelligence Service, (Russian {{lang|ru|Федера́льная Слу́жба Контрразве́дки; Federalnaya Sluzhba Kontrrazvedki}}) of Russia
Fiskerton railway station, in England
Forskolin, a diterpene
Forsvarets Spesialkommando, a Norwegian special forces unit
Fort Scott Municipal Airport, in Kansas, United States
Francis Scott Key Bridge (disambiguation)
Francis Scott Key High School, in Union Bridge, Maryland, United States
Freiwillige Selbstkontrolle der Filmwirtschaft, a German movie rating organization
Frequency-shift keying
Friends School Kamusinga, in Kenya
Kosovo Security Force, (Albanian: {{lang|sq|Forca e Sigurisë së Kosovës}})