Socialist Democratic Party may refer to:
Kurdistan Socialist Democratic Party Lithuanian Popular Socialist Democratic Party Mongolian New Socialist Democratic Party Russian Socialist Democratic Party Socialist Democratic Party (Canada) Socialist Democratic Party (Chile) Socialist Democratic Party (Japan) Socialist Democratic Party (Turkey) Socialist Democratic Party (India) Social Democratic Party of Germany Social Democratic Party in the GDR Social Democratic Party (Bosnia and Herzegovina) Social Democratic Party (Croatia)
See also Democratic Socialist Party (disambiguation) Social Democratic Party List of socialist parties Party of Democratic Socialism (disambiguation) Socialist Democrat Party, Peru Socialists and Democrats (disambiguation)