The 1937 Isle of Man Tourist Trophy saw Freddie Frith break the 90+ mph lap for the first time during the Senior TT with a speed of 90.27 mph on his Norton beating Stanley Woods by only 15 seconds. Frith also beat Wood in the Junior TT but only with a second placing.

The popular Jimmie Guthrie, who was killed during the German Grand Prix later that year, won Junior race but retired in the Senior TT at the Cutting, where a memorial was erected. The location, on the uphill climb from Ramsey to the Bungalow, on the Mountain Course, is now known as the Guthrie Memorial.

Harold Daniell who had been a works rider for AJS entered the 1937 TT with a three-year-old Norton tuned by his brother-in-law, Steve Lancefield which gave him a fifth place, a finishing position he also achieved in the Junior TT.

In the Lightweight TT Omobono Tenni becomes the first foreigner to secure a victory in an Isle of Man TT race on his Moto Guzzi.

Only 9 finishers