The League of Finnish American Societies maintains and promotes friendly relations between Finland and the United States to faciliate a broader understanding between these two countries.

The League of Finnish-American Societies is one of the world's largest USA friendship organization, with roughly 9 000 members in 54 local chapters throughout Finland and two in USA. The League was founded on the 1st of July 1943. Despite the fact that times were extraordinary due to the war in Europe, there was strong will in wide circles to maintain and strengthen relationships with the United States.

The League acts as a national central organization for its members. As stated in its own charter, the League is stricktly non-political and does not strive to influence affairs of state.