Shūnan (周南市, Shūnan-shi) is a city in Yamaguchi Prefecture, Japan.

Shūnan is located in south-central Yamaguchi Prefecture, bordered by the Seto Inland Sea to the south.

[2] Per Japanese census data, the population of Shūnan has been steady for the past 50 years.

Following the Meiji restoration, the village of Tokuyama within Tsuno District, Yamaguchi was established with the creation of the modern municipalities system on April 1, 1889.

On April 21, 2003 the city of Shūnan was founded by the merger of the cities of Tokuyama and Shinnan'yō, the town of Kumage (from Kumage District), and the town of Kano (from Tsuno District).

Shūnan has a mayor-council form of government with a directly elected mayor and a unicameral city council of 30 members.