Iinan (飯南町, Iinan-chō) is a town located in Iishi District, Shimane Prefecture, Japan.

[4] Per Japanese census data,[5][6] the population of Iinan has decreased by more than half over the past 50 years.

Iinan has a mayor-council form of government with a directly elected mayor and a unicameral town council of ten members.

Iinan, collectively with the towns of Unnan, contributes two members to the Shimane Prefectural Assembly.

In terms of national politics, the town is part of the Shimane 2nd district of the lower house of the Diet of Japan.