| Naam en Voornaam/Voornamen | Naam Toernooibase | Club of Land |
 Kovalevskij, Konstantin | Konstantin Kovalevskij | Rusland |
 Kovalski, Ales | Ales Kovalski | Tsjechie |
 Kovrizjkin, Anatoli Ivanovitsj | Anatoli Ivanovitsj Kovrizjkin | |
 Kowal, Anna | Anna Kowal | Polen |
| Kowalczyk, Jan | Jan Kowalczyk | Polen |
| Kowalska, Daria | Daria Kowalska | Polen |
| Kowalska, Justyna | Justyna Kowalska | Polen |
| Kowalski, Kamil | Kamil Kowalski | Polen |
| Kowalski, Norbert | Norbert Kowalski | Polen |
 Kowarski, Jan | Jan Kowarski | Belgie |
 Koyelongo, Koyelongo | Koyelongo Marcel | Congo D |
 Koyfman, Ygal | Ygal Koyfman | Israel |
 Kozachok, Dmytro | Dmytro Kozachok | Ukraine |
| Kozaczynski, Jakub | Jakub Kozaczynski | Polen |
| Kozaczynski, Mateusz | Mateusz Kozaczynski | Polen |
| Kozaczynski, Pawel | Pawel Kozaczynski | Polen |
| Kozak, Anastasiya | Anastasiya Kozak | Ukraine |
| Kozicka, Jagoda | Jagoda Kozicka | Polen |
| Kozik, Leslaw | Leslaw Kozik | Polen |
| Kozin, Maksym | Maksym Kozin | Ukraine |
 Kozjanovsky, Petr Grigorijevitsj | Petr Grigorijevitsj Kozjanovsky | Wit-Rusland |
| Kozjemjakin, Vladimir Ivanovitsj | Vladimir Ivanovitsj Kozjemjakin | Wit-Rusland |
| Kozlov, Aleksander | Aleksander Kozlov | Rusland |
 Kozlov, Bogdan | Bogdan Kozlov | |
| Kozlov, Evgeni | Evgeni Kozlov | Rusland |
| Kozlov, Iwan | Iwan Kozlov (29.08.1920 - 10.08.2003) Voeg info toe | |
| Kozlov, Viktor Nikoaljevitsj | Viktor Kozlov | Ukraine |
| Kozlova, Julia | Julia Kozlova | |
| Kozlovsky, Maxim | Maxim Kozlovsky | Rusland |
| Kozlowski, Edward | Edward Kozlowski | Polen |
| Kozlowski, Jan | Jan Kozlowski | Belgie |
| Kozun, Aleksei | Aleksei Kozun | Ukraine |
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