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 |
|---|---|---|---|---|---|
| Ian Standeven | 6 September 1989 | Rhencullen | 1989 Manx Grand Prix | Junior | 347cc Yamaha |
| John Smyth | 8 September 1989 | Verandah | 1989 Manx Grand Prix | Senior | 1100cc Suzuki |
| Bernard Trout | 3 September 1990 | Hawthorn, Greeba | 1990 Manx Grand Prix | Lightweight Classic | 250cc Ducati |
| Kevin Howe | 7 September 1990 | Schoolhouse Corner | 1990 Manx Grand Prix | Senior | 750cc VFR Honda |
| Ian Young | 28 May 1991 | Appledene | 1991 Isle of Man TT | Practice | Suzuki RGV 250cc |
| Petr Hlavatka | 29 May 1991 | The Nook | 1991 Isle of Man TT | Practice | 750cc Suzuki |
| Frank Duffy | 30 May 1991 | Kerrowmoar | 1991 Isle of Man TT | Practice | 125cc Honda |