Muan County (Muan-gun) is a county in South Jeolla Province (Jeollanam-o), South Korea. In 2005, Muan County became the capital of Jeollanam-do following the transfer of the provincial office from its previous location, Gwangju to the village of Namak in Muan. An international airport was opened here, and will probably replace the airports in Gwangju and Mokpo.