Luocheng Mulao Autonomous County (Zhuang: Lozcwngz Bouxmohlaujcuz Swci Yen, simplified Chinese: 罗城仫佬族自治县; traditional Chinese: 羅城仫佬族自治縣; pinyin: Luóchéng Mùlǎozú Zìzhìxiàn) is an ethnic Mulao county of northern Guangxi, China. It is under the administration of Hechi City. It is the only Mulao autonomous county in China.

There are 7 towns and 4 townships in the county:

The Mulao language (or Mulam) is spoken by the Mulao people of Luocheng County.

At least seven varieties of Chinese are spoken in Luocheng County (Edmondson 1992:137).