索伊尼是芬兰的城镇，位于该国西南部，由南博滕区负责管辖，始建于1868年，面积574平方公里，最高点海拔高度240米，2013年人口2,367，人口密度为每平方公里4.29人。

• Municipality of Soini – Official website

Soini is a municipality of Finland.

It is located in the province of Western Finland and is part of the Southern Ostrobothnia region. The municipality has a population of 2,252 (30 June 2015) and covers an area of 574.24 square kilometres (221.72 sq mi) of which 22.17 km (8.56 sq mi) is water. The population density is 4.08 inhabitants per square kilometre (10.6/sq mi).