Novák or Nováková
Dvořák or Dvořáková
Novotný or Novotná
Svoboda or Svobodová
Černý or Černá
Navrátil or Navrátilová
Other (they might be more common in certain municipalities than in the others)
Czech names are composed of a given name and a family name (surname). Czechs typically get one given name – additional names may be chosen by themselves upon baptism but they generally use one. With marriage, the bride typically adopts the bridegroom's surname.