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 |
|---|---|---|---|---|---|
| Kenny Birch | 5 June 1978 | Bray Hill | 1978 Isle of Man TT | Sidecar TT(Passenger) | 750cc Yamaha |
| Ernst Trachsel | 5 June 1978 | Quarterbridge Road | 1978 Isle of Man TT | Sidecar TT | 499cc Suzuki |
| Mike Adler | 9 June 1978 | Glen Helen | 1978 Isle of Man TT | Classic TT | 350cc Yamaha |
| Michael L. Sharpe | 29 August 1978 | Cruickshanks Corner | 1978 Manx Grand Prix | Practice | 347cc Yamaha |
| Steve Verne | 4 June 1979 | Barregarow | 1979 Isle of Man TT | Sidecar TT | 738cc Suzuki |
| Fred Launchbury | 8 June 1979 | Glentramman | 1979 Isle of Man TT | Formula III | 248cc Maico |
| Steven R. Holmes | 27 August 1979 | Cruickshanks Corner | 1979 Manx Grand Prix | Practice | 350cc Yamaha |