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 |
|---|---|---|---|---|---|
| George B Armstrong | 1 September 1965 | Sulby Bridge | 1965 Manx Grand Prix | Practice | Triton |
| Toshio Fujii | 26 August 1966 | Cruickshanks Corner | 1966 Isle of Man TT | Practice | 125cc Kawasaki |
| Brian Duffy | 28 August 1966 | Mountain Box | 1966 Isle of Man TT | Lightweight TT | 250cc Yamaha |
| Alfred E Shaw | 10 June 1967 | Mountain Box | 1967 Isle of Man TT | Practice | 500cc Norton |
| Geoffery Proctor | 29 August 1967 | Rhencullen Hill | 1967 Manx Grand Prix | Practice | 248cc Cotton |
| Kenneth E. Herbert | 1 September 1967 | Doran`s Bend | 1967 Manx Grand Prix | Practice | 499cc Norton |
| Ian D.Veitch | 10 June 1968 | Ballagarey Corner | 1968 Isle of Man TT | Lightweight TT | Kawasaki |