The Yàntra (Bulgarian: Янтра) is a river in northern Bulgaria, a right tributary of the Danube. It is 285 km long (the third longest Bulgarian tributary of the Danube) and has a watershed of 7,862 km².The Yantra has its source from the northern foot of Hadzhi Dimitar Peak in Central Stara Planina, at 1,340 m. In its upper course, it is often called Etar (Етър), its older name.