Žáček (feminine Žáčková) is a Czech surname, a diminutive of Žák ('student'). Notable people include:
Dušan Žáček, Czech basketball player Josef Žáček, Czech painter Lucie Žáčková, Czech actress Pavel Žáček, Czech doctor of philosophy
Fictional character
Prince Zacek, main character in the Mexican comic Karmatrón y los Transformables
See also Zak (surname), Russian surname Żak, Polish surname