The Finnish Socialist Federation (Finnish: Amerikan Suomalainen Sosialistijärjestö) was a language federation of the Socialist Party of America which united Finnish language-speaking immigrants in the United States in a national organization designed to conduct propaganda and education for socialism among their community.
In 1936, in response to a factional split in the Socialist Party which saw the party's moderate wing quit en masse to form the Social Democratic Federation of America, the Finnish Socialist Federation similarly departed to reestablish itself as the Finnish American League for Democracy (Finnish: Amerikan Suomalainen Kansanvallan Liitto).