Worldwide, Lydka (Lydka 
) is an extremely rare unknown gender given name. Much less frequently, Lydka is the last name as well as the forename.
Jan, Malgorzata, Karásková, Stanislaw, Sokolová, Zbigniew, Leokadia, Grzegorz, Popovici, Stefania, Urszula, Vargova, Jolanta, Gresova, Godušová, Petrušová, Kmecova, Mizeráková, Teresa, Janina, Bozena, Zofia, Jerzy, Piotr, Beata, Marek, Maria, Jzef, Adam, Anna, Ewa, Barbara, and Franciszek