Mulan County (simplified Chinese: 木兰县; traditional Chinese: 木蘭縣; pinyin: Mùlán Xiàn) is under the administration of Harbin, the capital of Heilongjiang province, People's Republic of China. It borders Tonghe County to the east, Fangzheng County to the southeast, Bin County to the south, and Bayan County to the west, as well as the prefecture-level city of Suihua to the north.