Every country in the world has some form of parliament. Parliamentary systems fall into two categories: bicameral and unicameral. Out of 193 countries in the world, 79 are bicameral and 113 are unicameral, making a total of 272 chambers of parliament with over 46,000 members of parliament. IPU membership is made up of 179 national parliaments. Discover the world's national
The IPU has been collecting data on parliaments since its inception in 1889, including information on women’s participation in politics since 1945. In this section, discover the IPU's knowledge bank for and about parliaments.
The IPU was founded 130 years ago on 30 June 1889 as the first political multilateral organization in the world, encouraging cooperation and dialogue between all nations.
Under the umbrella slogan of "130 years of empowering parliamentarians", the IPU and its Members are celebrating 130 years of parliamentary diplomacy and action from June 2019 to June 2020.
On the anniversary day itself, Sunday 30 June 2019 - also International Day of Parliamentarism - the Presidents of the most recent and future IPU Assemblies met in a "Quintet" of current IPU leadership. The Speakers and IPU leadership discussed the ongoing relevance of the founding values and principles of the IPU 130 years on, results achieved at the previous Assemblies, and actions ahead.
The IPU's 179 Member Parliaments are celebrating the milestone in a number of different events around the world. IPU Members are also contributing to the production of a special anniversary book as well as the elaboration of a dedicated charter for parliamentary diplomacy.