Lužnica

Lužnica may refer to:


 * Lužnica, Croatia, a village in Croatia, in Zaprešić Municipality
 * Lužnica, Visoko, a village in Bosnia and Herzegovina, in Visoko Municipality, Federation of Bosnia and Herzegovina
 * Lužnica, Podgorica, a village in Montenegro, in Podgorica Municipality
 * Lužnica, Suva Reka, a village in Kosovo, in Suva Reka Municipality
 * Lužnica (region), region in Serbia
 * Lužnica (river), river in Serbia, tributary of Vlasina
 * Lužnica (Skrapež), river in Serbia, tributary of Skrapež