State Party may refer to:
a category of political party in India German State Party, a short-lived German political party of the Weimar Republic Dutch States Party, a political party in the Netherlands early 1600s–mid 1700s Liberal State Party, a political party in the Netherlands 1921–1948 Roman Catholic State Party, a political party in the Netherlands 1926–1945 State Party of Serbian, Croatian and Slovene Democrats, a political party in Yugoslavia 1919–1924
See also One-party state