Luonan County (, pinyin: Luònán Xiàn) is a county of Shangluo Municipality, Shaanxi Province, China. It is in the northeast part of Shangluo. Henan Provice is to the east. Danfeng County and Shangzhou District are to the south. Weinan Municipality is to the north. Xi'an Municipality is to the west. It covers . As of November 2010, 441,643 people lived here. 72% of here are montane ecology.