Hungarian Socialist Workers' Party ended in 1989.
Jewish Socialist Workers Party ended in 1917.
Zionist Socialist Workers Party ended in 1917.
Socialist Workers' Party of Finland ended in 1923.
National Socialist Workers' Party of Denmark ended in 1945.
German National Socialist Workers' Party - Czechoslovakia - ended in 1933.
Workers' Socialist Federation ended in 1924.
Hungarian Communist Party ended in 1948.
Socialist Party of Vietnam ended in 1988.
British Socialist Party ended in 1920.
Portuguese Socialist Party ended in 1933.
Italian Socialist Party ended in 1994.
Socialist Party of Washington ended in 1972.