| Helmut Kassner | |
| Nationality: | German |
| Gp Active Years: | 1973–1977 |
| Gp Teams: | Suzuki, Yamaha |
| Gp Race Starts: | 8 |
| Gp Championships: | 0 |
| Gp Race Wins: | 2 |
| Gp Podiums: | 2 |
| Gp Total Points: | 35 |
| Gp Poles: | 0 |
| Gp Fastest Laps: | 0 |
| Gp First Race: | 1976 500cc Isle of Man TT |
| Gp First Win: | 1974 250cc West German Grand Prix |
| Gp Last Win: | 1974 350cc West German Grand Prix |
| Gp Last Race: | 1989 500cc Czechoslovakian Grand Prix |
Helmut Kassner (born 26 December 1946, in Dachau) is a German former professional Grand Prix motorcycle road racer. His best season was in 1974 when he won the 350cc and 250cc German Grand Prix.[1] The German round was boycotted by the top racers over safety concerns due to a lack of hay bales at the Nürburgring race circuit. He is the younger brother of Horst Kassner.