Langxi County (simplified Chinese: 郎溪县; traditional Chinese: 郎溪縣; pinyin: Lángxī Xiàn) is a county in the southeast of Anhui Province, People's Republic of China, bordering Jiangsu Province to the north.

The government of Langxi County is located in Jianping Town.

Langxi County has jurisdiction over eight towns and nine townships.

Langxi County is divided to 8 towns and 4 townships.

[1] The county is served by Langxi South railway station, situated near Shizi town.