Constitutional Democratic Party (Japan)
| Rikken Minseitō 立憲民政党 | |
|---|---|
| Leader | Hamaguchi Osachi Wakatsuki Reijirō Machida Chūji | 
| Founded | June 1, 1927 | 
| Dissolved | August 15, 1940 | 
| Preceded by | Kenseikai Seiyūhontō | 
| Merged into | Imperial Rule Assistance Association | 
| Headquarters | Sakurada-cho, Shiba-ku, Tokyo City | 
| Newspaper | Minsei | 
| Ideology | Liberalism Progressivism Conservatism Parliamentarism Constitutional monarchy Anti-Seiyūkai Faction: Populism | 
| Political position | Centre to centre-left | 
Rikken Minseitō (立憲民政党; Constitutional Democratic Party) was one of the main political parties in pre-war Empire of Japan. It was commonly known as the Minseitō.