Socialist Union of Popular Forces was created in 1975.
National Union of Popular Forces was created in 1959.
Socialist Union Party was created in 1939.
Gabonese Socialist Union was created in 1991.
Socialist-Communist Union was created in 1923.
Patriotic Socialist Union was created in 2007.
Socialist Youth Union was created in 1921.
Socialist Union of America was created in 1953.
Arab Socialist Union - Syria - was created in 1973.
Socialist Movement of the Senegalese Union was created in 1956.
Arab Socialist Union - Iraq - was created in 1964.
Arab Socialist Union - Libya - was created in 1971.
Democratic Arab Socialist Union was created in 1980.