The Naseong City Wall (Korean: 나성; Hanja: 羅城) is a Baekje-era wall in Buyeo County, South Chungcheong Province, South Korea.

[1][2] They are part of the UNESCO World Heritage Site Baekje Historic Areas.

[3] The walls were built possibly around 538 (Korean calendar) to defend Sabi, the capital of Baekje.

The walls were presumed to surround the city, but currently only parts of the northern and eastern section remain.

The known wall section starts from the north gate of the fortress Busosanseong and continues southeast and south.