Blahnița may refer to several places in Romania:
Blahnița de Jos, a village in Târgu Cărbunești town, Gorj County Blahnița de Sus, a village in Săcelu Commune, Gorj County Blahnița (Danube), a river in Mehedinți County Blahnița (Gilort), a river in Gorj County Blahnița, a protected area in Gorj County