The is a currently active Japanese political party established in 1996. Social Democratic Party (Japan) may also refer to: Historical political parties , also referred to as the 'Social Democratic Party of Japan', a major Japanese political party that existed from 1945 to 1996 , a political party that existed from 1926 to 1932 , a political party that existed briefly in 1901 See also Japan Socialist Party (disambiguation), a disambiguation page for Japanese socialist parties List of social democratic parties