Ralf Koser (born 4 April 1973) is a German judoka. His sister Anja is a retired German first league team handball and soccer player.
Achievements
| Year | Tournament | Place | Weight class |
|---|---|---|---|
| 1997 | European Judo Championships | 7th | Heavyweight (+95 kg) |
| 1996 | European Judo Championships | 5th | Heavyweight (+95 kg) |
| 1995 | European Judo Championships | 2nd | Open class |
| 1994 | European Judo Championships | 5th | Open class |
| 1992 | 1992 World U20 Judo Championships | 1st | Heavyweight (+95 kg) |