Trondhjems Turnforening, often called Trondhjems Turn, is a Norwegian gymnastics club from Trondheim.
The club was founded on 14 February 1858, and is therefore Norway's fourth oldest sports club[1] after Oslo TF (founded 1855), Arendal TF and Drammens TF (both founded 1857).[2]
Gymnast Karl Aas who represented the club won an Olympic silver medal in 1920.[3] The brothers Rasmus and Thorleif Petersen also represented the club, and won gold medals at the 1906 Intercalated Games.[4][5]
In the first years the club practised both shooting, skiing, speed skating, fencing and rowing. The club has concentrated on gymnastics since the mid-1870s. Some sports have since split out and created their own clubs, such as the Trondhjems Skiklub and Trondhjems Skytterlag.[1]