List of Snaefell Mountain Course fatal accidents List of fatal accidents involving competitors List of fatal accidents involving competitors

| Rider | Date_ | Place | Race | Event | Machine |
|---|---|---|---|---|---|
| Archie Birkin | 7 June 1927 | Rhencullen | 1927 Isle of Man TT | Practice | 500cc McEvoy |
| John Cooke | 15 June 1927 | East Snaefell Mountain Gate | 1927 Isle of Man TT | Lightweight TT | 249cc DOT |
| Cecil Ashby | 10 June 1929 | Ballacraine | 1929 Isle of Man TT | Junior TT | New Imperial |
| Doug Lamb | 14 June 1929 | Greeba Bridge | 1929 Isle of Man TT | Senior TT | 500cc Norton |
| Freddie Hicks | 19 June 1931 | Union Mills | 1931 Isle of Man TT | Senior TT | AJS |
| Frank Longman | 14 June 1933 | Glentramman Corner | 1933 Isle of Man TT | Lightweight TT | Excelsior |
| Arthur Pilling | 31 August 1933 | Hillberry Corner | 1933 Manx Grand Prix | Practice | Norton |