Interparliamentary Union

The Inter-Parliamentary Union (IPU; French: Union Interparlementaire, UIP) is an international organization of national parliaments. Its primary purpose is to promote democratic governance, accountability, and cooperation among its members; other initiatives include advancing gender parity among legislatures, empowering youth participation in politics, and sustainable development.

The organization was established in 1889 as the Inter-Parliamentary Conference. Its founders were statesmen Frédéric Passy of France and William Randal Cremer of the United Kingdom, who sought to create the first permanent forum for political multilateral negotiations. Initially, IPU membership was reserved for individual parliamentarians, but has since transformed to include the legislatures of sovereign states. As of 2025, the national parliaments of 183 countries are members of the IPU, while 15 are associated members, most of whom are regional parliaments. Some of the organization's member states are not democratic by indexes.