Serbia borders Hungary.
Hungary . It covers an area of 93,030 km2 , situated in the Carpathian Basin , and is bordered by Slovakia to the north , Romania to the east , Serbia to the south , Croatia to the southwest , Slovenia to the west , Austria to the northwest , and Ukraine to the northeast . Serbia . It borders Hungary to the north ; Romania and Bulgaria to the east ; Macedonia to the south ; and Croatia , Bosnia and Herzegovina , Montenegro to the southwest .