Grzelak

Grzelak is a Polish surname, it may refer to:
 * Bartłomiej Grzelak, Polish footballer
 * Bartosz Grzelak, Polish-Swedish football player and manager
 * Klaudia Grzelak, Polish volleyball player
 * Mikołaj Grzelak, Polish footballer
 * Rafał Grzelak, Polish footballer
 * Rafał Grzelak (born 1988), Polish footballer
 * Stanisław Grzelak, Polish cyclist
 * Tadeusz Grzelak, Polish boxer