FK Sileks is a football club based in Kratovo, North Macedonia, who play in the Macedonian First League.

Kratovo is a small town in North Macedonia. It is the seat of Kratovo Municipality. It lies on the western slopes of Mount Osogovo at an altitude of 600 metres (2,000 ft) above sea level. Having a mild and pleasant climate, it is located in the crater of an extinct volcano. It is known for its bridges and towers.