The Landtag of Prussia (German: Preußischer Landtag) was the representative assembly of the Kingdom of Prussia implemented in 1849, a bicameral legislature consisting of the upper House of Lords (Herrenhaus) and the lower House of Representatives (Abgeordnetenhaus). After World War I and the German Revolution of 1918–19 the Landtag diet continued as the parliament of the Free State of Prussia between 1921 and 1934, when it was abolished by the Nazi regime.
The Prussian State Council (German: Preußischer Staatsrat) was the second chamber of the bicameral legislature of the Free State of Prussia between 1921 and 1933; the first chamber was the Prussian Landtag (Preußischer Landtag). The members of the State Council were elected by the provincial parliaments and gave the provinces of Prussia a voice in the legislative process. The Council had an indirect right to introduce legislation, could object to bills passed by the Reichstag and had to approve expenditures that exceeded the budget.