宿毛市是位于高知县西南部与爱媛县接壤的城市。主要市区位于宿毛湾旁，辖区还包括冲之岛。

在约4千年前，现在的市区松田川河口为一片湿原，随着泥沙的淤积才逐渐成为现在的河口平原。

平安时代菅原道真被左迁到九州时，所撘乘的船只一度遭遇暴风雨，而在宿毛的小筑紫湾内的岛屿停留了七日，也因得到了七日岛的称呼。

江户时代，宿毛成为山内一丰外甥山内可氏的领地，直到明治时代。

Sukumo(宿毛市,Sukumo-shi) is a city located in Kōchi Prefecture, Japan. The city was founded on March 31, 1954.

As of April 1, 2011, the city has an estimated population of 22,802, with 10,237 households and a population density of 79.70 persons per km². The total area is 286.11 km².