Scottish Republican Socialist Party ended in 1998.
Republican-Socialist Party ended in 1934.
Republican Socialist Party ended in 1889.
Radical Socialist Republican Party ended in 1934.
Scottish Socialist Party United Left ended in 2007.
Socialist Party of Vietnam ended in 1988.
Portuguese Socialist Party ended in 1933.
Italian Socialist Party ended in 1994.
Socialist Party of Washington ended in 1972.
Sammarinese Socialist Party ended in 2005.
Socialist Union Party ended in 1941.
Pacifist Socialist Party ended in 1991.
Socialist Party of America ended in 1973.