List of political parties in Japan
Parties currently represented in the national Diet
Legal status as political party (seitō) is tied to having five members in the Diet or at least two percent nationally of either proportional or local vote in the last Representatives or one of the last two Councillors elections.

List of political parties in Japan

Section Title: Parties currently represented in the national Diet
Table Section Text: Legal status as political party (seitō) is tied to having five members in the Diet or at least two percent nationally of either proportional or local vote in the last Representatives or one of the last two Councillors elections.

Party	Diet Representation	Party Leader	Comments

Reps.	Counc.

Liberal Democratic Party Jiyū Minshu-tō 自由民主党, or Jimin-tō 自民党	284	123	Shinzō Abe PM Reps.	Centre-right to right-wing. The LDP is made up of various conservative, nationalist and centrist factions.

Constitutional Democratic Party Rikken Minshu-tō 立憲民主党	57	17	Yukio Edano Reps.	The Constitutional Democratic Party is a centre-left party and advocates for Constitutionalism. The party was formed in late 2017 from the more left-leaning members of the Democratic Party, formerly Japan's second largest party, which was dissolved a few days earlier.

Democratic Party for the People Kokumin-minshutō 国民民主党	39	23	Yuichiro Tamaki Reps.	A centre to centre-right, liberal conservative party. The party was formed in May 2018 as part of a merger between remaining centrist and right-leaning members of the Democratic Party and members of the centre-right Party of Hope.

Komeito Kōmeitō 公明党 ("Clean Government", "Fairness" or "Justice Party")	29	25	Natsuo Yamaguchi Coun.	The Komeito Party was formerly known as the Clean Government Political Assembly, Kōmeitō (1962–98) and New Komeito. At its foundation, the party was centre-left, but it has drifted rightwards as a participant in the LDP's governing coalitions, and is now considered a centre-right conservative party.

Japanese Communist Party Nihon Kyōsan-tō 日本共産党	12	14	Kazuo Shii Reps.	The Japanese Communist Party is Japan's oldest party. It was formed in 1922 as an underground organization in the Empire of Japan, but was legalized after World War II during the Occupation.

Nippon Ishin no Kai 日本維新の会	11	11	Ichirō Matsui Gov. of Osaka Pref.	Nippon Ishin no Kai advocates for economic liberalism, localism, limited government, and administrative reform. The party was formed by Osaka mayor Tōru Hashimoto from the split of the Japan Innovation Party.

Liberal Party Jiyū-tō 自由党	2	4	Ichirō Ozawa Coun.	The Liberal Party is a centre to centre-left party. Formed as the People's Life Party in 2012, it changed its name to People's Life Party & Taro Yamamoto and Friends in 2014.

Party of Hope Kibō no tō 希望の党	2	3	Shigefumi Matsuzawa Coun.	A right-wing conservative party. Formed as a new party in May 2018 after the old party with the same name joined the Democratic Party for the People.

Social Democratic Party Shakai Minshu-tō 社会民主党	2	2	Seiji Mataichi Coun.	The SDP is a social-democratic party. It is a successor of the Japan Socialist Party, which had been Japan's largest opposition party in the 1955 System.

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