Ljubljanica is a river in the southern part of the Ljubljana Basin, Slovenia.
Ljubljanica may also refer to:
Slovenia
Ljubljanica (creek), a creek in Velika Loka, Grosuplje Ljubljanica, Butajnova, a hamlet in the village of Butajnova Ljubljanica, Stomaž, a hamlet in the village of Stomaž, Ajdovščina Ljubljanica, Žalna, a hamlet in the village of Žalna
Croatia Ljubljanica, Sisak-Moslavina County, a settlement near Martinska Ves Ljubljanica, Zagreb, a neighbourhood of Zagreb