Sdertälje SK is an ice hockey club in the town of Södertälje in Sweden. It was established on 22 February 1902 and originally practiced gymnastics, track and field athletics, soccer, tug of war and speed skating. A bandy section was established in 1907. The 1910's and 1920's saw the club scoring successes in competitive cyccling. The club started practicing and playing ice hockey in January and February 1925.