索通阿是芬兰的城镇，由奥兰群岛负责管辖，始建于1959年，面积342.46平方公里，该地区自十一世纪有人类居住，2013年人口104，人口密度为每平方公里3.71人。

• Official website of Sottunga
• Map of Sottunga municipality

Sottunga is an island municipality of Åland, an autonomous territory of Finland. The municipality is the smallest when it comes to population in Åland and in Finland, with a population of only 100 (30 June 2015) and covers an area of 342.46 square kilometres (132.22 sq mi) of which 314.41 km (121.39 sq mi) is water. The population density is 3.57 inhabitants per square kilometre (9.2/sq mi). The municipality is unilingually Swedish, with 7,001,887,000,000,000,000♠88.7% of the inhabitants speaking Swedish as their native language. Sottunga comprises many islands, of which only three, Husö, Finnö and Storsottunga, are inhabited. Storsottunga is usually called Sottunga. There are five villages in the municipality: Finnö, Husö, Hästö, Mosshaga and Sottunga. The highest point of Sottunga is Kasberget (25 m).