伊索约基是芬兰的城镇，位于该国西南部，由南博滕区负责管辖，始建于1855年，面积647平方公里，2013年人口2,299，人口密度为每平方公里3.58人。

• Municipality of Isojoki – Official website

Isojoki (Swedish:Storå) is a municipality of Finland.

It is located in the province of Western Finland and is part of the Southern Ostrobothnia region. The population of Isojoki is 2,158 (30 June 2015) and the municipality covers an area of 642.38 km (248.02 sq mi) of which 5.05 km (1.95 sq mi) is inland water (1 January 2011). The population density is 3.36/km (8.7/sq mi). Although the area isn't very high, one of the highest hills of southern Finland is located here (Lauhanvuori). Many Finns from this area immigrated to Minnesota, in the USA, as well as Michigan.