Jan Ykema
| full name | Jan Jelle Ykema | |
| nationality | the Netherlands (NED) | |
| born | April 1963 | in Harlingen (the Netherlands) |
| Navigation | Championships | World Cup | World Records |
Championships - Medal table and top 10 positions
| kampioenschap | gold | silver | bronze | 4th-6th | 7th-10th | starts |
 Olympic Games | 0 | 1 | 0 | 0 | 0 | 4 |
| WCh Sprint | 0 | 0 | 0 | 1 | 0 | 7 |
Championships - Results
| year | position | championship | place | |
| 1981 | 20 | WCh Sprint | Grenoble | FRA |
| 1982 | 28 | WCh Sprint | Alkmaar | NED |
| 1984 | 14 | Olympic Games 500 meters | Sarajevo | YUG |
| 20 | Olympic Games 1000 meters | Sarajevo | YUG | |
| 18 | WCh Sprint | Trondheim | NOR | |
| 1986 | 31 | WCh Sprint | Karuizawa | JPN |
| 1987 | 18 | WCh Sprint | Sainte-Foy | CAN |
| 1988 | 2  | Olympic Games 500 meters | Calgary | CAN |
| DNF | Olympic Games 1000 meters | Calgary | CAN | |
| 6 | WCh Sprint | West Allis | USA | |
| 1989 | 12 | WCh Sprint | Heerenveen | NED |
