Jan Ykema
| volledige naam | Jan Jelle Ykema | |
| actief namens | Nederland (NED) | |
| geboren | april 1963 | in Harlingen (Nederland) |
| Navigatie | Kampioenschappen | World Cups | Records |
Wereldrecords
| # | discipline | record | datum | plaats | ||
| jr1 | 1000 meter | 1.17,78 | 30-01-1981 | Davos | SUI | |
| jr2 | 1000 meter | 1.17,49 | 31-01-1981 | Davos | SUI | |
| jr3 | 500 meter | 0.38,42 | 31-01-1981 | Davos | SUI | |
| jr4 | sprint vierkamp | 155,935 | 30/31-01-1981 | Davos | SUI | |
Nederlands records
| # | discipline | record | datum | plaats | ||
| 1 | 500 meter | 0.37,54 | 22-01-1984 | Davos | SUI | |
| 2 | 500 meter | 0.37,42 | 19-03-1987 | Heerenveen | NED | |
| 3 | 500 meter | 0.37,38 | 05-12-1987 | Calgary | CAN | |
| 4 | 1000 meter | 1.14,24 | 06-12-1987 | Calgary | CAN | |
| 5 | 500 meter | 0.36,76 | 14-02-1988 | Calgary | CAN | |
| 6 | sprint vierkamp | 149,525 | 25/26-02-1989 | Heerenveen | NED | |
