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 |
|---|---|---|---|---|---|
| Paul Cowley | 2 June 2004 | Black Dub | 2004 Isle of Man TT | Practice Sidecar TT (Passenger) | 600cc Yamaha Thundercat |
| Colin Breeze | 5 June 2004 | Quarry Bends | 2004 Isle of Man TT | Formula 1 TT | Suzuki GSX-R1000 |
| Gavin Feighery | 28 August 2004 | Mountain Box | 2004 Manx Grand Prix | Practice | 600cc Suzuki |
| Tommy Clucas | 1 September 2004 | Ballaugh Bridge | 2004 Manx Grand Prix | Junior | 600cc Honda |
| Joakim Karlsson | 30 May 2005 | Douglas Road Corner | 2005 Isle of Man TT | Practice | 1000cc Suzuki GSXR |
| Les Harah | 4 June 2005 | Parliament Square | 2005 Isle of Man TT | Sidecar Race A | 600cc Yamaha |
| Gus Scott | 10 June 2005 | Rhencullen | 2005 Isle of Man TT | Senior TT | 1000cc Honda CBR |