List of members of the Diet of Japan
This is a list of members of the Diet of Japan. The Diet has two chambers: the House of Councillors (upper house) and the House of Representatives (lower house). Councillors serve six year terms, with half being elected every three years. Representatives serve terms of up to four years, but the House of Representatives can be dissolved, causing a shorter term (snap election).
House of Representatives
Below are lists of representatives elected in Japanese general elections since 2003.
- Members of the House of Representatives elected in the 43rd general election (2003)
- Members of the House of Representatives elected in the 44th general election (2005)
- Members of the House of Representatives elected in the 45th general election (2009)
- Members of the House of Representatives elected in the 46th general election (2012)
- Members of the House of Representatives elected in the 47th general election (2014)
- Members of the House of Representatives elected in the 48th general election (2017)
- Members of the House of Representatives elected in the 49th general election (2021)
- Members of the House of Representatives elected in the 50th general election (2024)
- Current list: Members of the House of Representatives elected in the 51st general election (2026)
Composition
| ||||
| Parliamentary groups/caucuses | Parties | Seats | ||
|---|---|---|---|---|
| Liberal Democratic Party / Assembly of Independents Jiyūminshutō・Mushozoku no Kai |
Liberal Democratic Party (LDP) Independents |
316 | ||
| Centrist Reform Alliance Chūdō Kaikaku Rengō |
Centrist Reform Alliance | 48 | ||
| Nippon Ishin no Kai Nippon Ishin no Kai |
Nippon Ishin no Kai | 36 | ||
| Democratic Party for the People / Independent Club Kokumin Minshutō・Mushozoku Kurabu |
Democratic Party For the People (DPFP) | 28 | ||
| Sanseitō Sanseitō |
Sanseitō | 15 | ||
| Team Mirai Chīmu Mirai |
Team Mirai | 11 | ||
| Japanese Communist Party Nihon Kyōsantō |
Japanese Communist Party (JCP) | 4 | ||
| Independents (not member of a caucus) Mushozoku |
LDP (Speaker) CRA (Vice Speaker) Independents (not member of a party) Reiwa Shinsengumi Tax Cuts Japan and Yukoku Alliance |
7 | ||
| Total | 465 | |||
The following table lists members of the House of Representatives by constituency and parliamentary group (会派, kaiha) as of 18 February 2026. The elected party column shows the party under which each member was elected; the parliamentary group column shows their current parliamentary group membership, which may differ.
Notes:
- Not all members of a parliamentary group are necessarily members of the associated party/parties if any, and vice versa. For example, the Speaker and Vice-Speaker of the House of Representatives are independents in terms of parliamentary group membership, but not independents in terms of party membership.
House of Councillors
Composition
| |||||||||
| Caucus (English name)[11] (Japanese name) |
Parties | Members | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Term | Total | ||||||||
| 26 July 2022 – 25 July 2028 (elected 2022, up 2028) |
29 July 2025 – 28 July 2031 (elected 2025, up 2031) | ||||||||
| PR | SNTV/FPTP | Subtotal | PR | SNTV/FPTP | Subtotal | ||||
| Government | 120 | ||||||||
| Liberal Democratic Party and Group of Independents Jiyūminshutō / Mushozoku no Kai |
Liberal Democratic Party (LDP) Independent |
18 | 43 | 61 | 12 | 28 | 40 | 101 | |
| Nippon Ishin (Japan Innovation Party) Nippon Ishin no Kai |
Nippon Ishin no Kai | 8 | 4 | 12 | 4 | 3 | 7 | 19 | |
| Opposition | 121 | ||||||||
| The Constitutional Democratic Party of Japan and Independents Rikken-minshu / Mushozoku |
Constitutional Democratic Party (CDP) Independents |
7 | 10 | 17 | 7 | 16 | 23 | 40 | |
| Democratic Party For the People and The Shin-Ryokufukai Kokumin-minshutō / Shin-Ryokufūkai |
Democratic Party For the People (DPFP) | 3 | 4 | 7 | 7 | 11 | 18 | 25 | |
| Komeito Kōmeitō |
Komeito | 6 | 7 | 13 | 4 | 4 | 8 | 21 | |
| Sanseito Sanseitō |
Sanseitō | 1 | 0 | 1 | 7 | 7 | 14 | 15 | |
| Japanese Communist Party Nihon Kyōsantō |
Japanese Communist Party (JCP) | 3 | 1 | 4 | 2 | 1 | 3 | 7 | |
| Reiwa Shinsengumi Reiwa Shinsengumi |
Reiwa Shinsengumi | 2 | 0 | 2 | 3 | 0 | 3 | 5 | |
| Conservative Party of Japan Nihon Hoshutō |
Conservative Party of Japan | 0 | 0 | 0 | 2 | 0 | 2 | 2 | |
| Okinawa Whirlwind Okinawa no Kaze |
Independents | 0 | 1 | 1 | 0 | 1 | 1 | 2 | |
| Team Mirai and the Independent Chīmu Mirai / Mushozoku no Kai |
Team Mirai Independent |
0 | 0 | 0 | 1 | 1 | 2 | 2 | |
| Social Democratic Party Shakai Minshutō |
Social Democratic Party (SDP) | 1 | 0 | 1 | 1 | 0 | 1 | 2 | |
| Unaffiliated | 1 | 3 | 4 | 0 | 2 | 2 | 6 | ||
| Independents Members not affiliated with any parliamentary caucus |
LDP 1 (President) CDP 1 (Vice President) Independents | ||||||||
| Total | 50 | 73 | 123 | 50 | 74 | 124 | 247 | ||
| Vacant: one constituency seat in Tokyo (2028 class), vacant since the resignation of incumbent Reiwa Shinsengumi leader, Taro Yamamoto, on 21 January 2026[12] (no by-election held per Public Offices Election Act; threshold of one-quarter of district seats not met)[13] |
N/A | 0 | 1 | 1 | 0 | 0 | 0 | 1 | |
List of members by parliamentary group and constituency:[14][11]
- Liberal Democratic Party and Group of Independents (LDP-GI)
- The Constitutional Democratic Party of Japan and the Independent (CDP)
- Democratic Party For the People and The Shin-Ryokufukai (DPFP-SR)
- Komeito (KP)
- Nippon Ishin (Japan Innovation Party) (JIP)
- Sanseito (SAN)
- Japanese Communist Party (JCP)
- Reiwa Shinsengumi (Reiwa)
- Conservative Party of Japan (CPJ)
- Okinawa Whirlwind (OW)
- Team Mirai and the Independent (MIRAI)
- Social Democratic Party (SDP)
- Independents (I)
Notes:
- Not all members of a caucus are also members of the affiliated party, and sometimes even some members of a party are not member of the affiliated caucus.
Members
References
- ^ 会派名及び会派別所属議員数. House of Representatives (in Japanese). 18 February 2026. Retrieved 22 February 2026.
{{cite web}}: CS1 maint: url-status (link) - ^ a b c d e f g h i j k 会派別議員一覧（自由民主党・無所属の会） [List of Members by Parliamentary Group (Liberal Democratic Party and Group of Independents)] (in Japanese). House of Representatives (Japan). 18 February 2026. Retrieved 5 March 2026.
- ^ a b c d e f g h i j k 会派別議員一覧（中道改革連合・無所属） [List of Members by Parliamentary Group (Centrist Reform Alliance and Independents)] (in Japanese). House of Representatives (Japan). 18 February 2026. Retrieved 5 March 2026.
- ^ a b c d e f g h i j k 会派別議員一覧（日本維新の会） [List of Members by Parliamentary Group (Nippon Ishin no Kai)] (in Japanese). House of Representatives (Japan). 18 February 2026. Retrieved 5 March 2026.
- ^ a b c d e f g h i j k 会派別議員一覧（国民民主党・無所属クラブ） [List of Members by Parliamentary Group (Democratic Party for the People and Independents Club)] (in Japanese). House of Representatives (Japan). 18 February 2026. Retrieved 5 March 2026.
- ^ a b c d e f g h i j k 会派別議員一覧（参政党） [List of Members by Parliamentary Group (Sanseitō)] (in Japanese). House of Representatives (Japan). 18 February 2026. Retrieved 5 March 2026.
- ^ a b c d e f g h i j k 会派別議員一覧（チームみらい） [List of Members by Parliamentary Group (Team Mirai)] (in Japanese). House of Representatives (Japan). 18 February 2026. Retrieved 5 March 2026.
- ^ a b c d e f g h i j k 会派別議員一覧（日本共産党） [List of Members by Parliamentary Group (Japanese Communist Party)] (in Japanese). House of Representatives (Japan). 18 February 2026. Retrieved 5 March 2026.
- ^ a b c d e f g h i j k 会派別議員一覧（無所属） [List of Members by Parliamentary Group (Independents)] (in Japanese). House of Representatives (Japan). 18 February 2026. Retrieved 5 March 2026.
- ^ 会派別所属議員数 [Number of members belonging to each caucus]. Sangiin 参議院 [House of Councillors] (in Japanese). 2026-02-15. Retrieved 2026-02-15.
- ^ a b c "List of the Members: House of Councillors". House of Councillors. 2026-02-15. Retrieved 2026-02-15.
- ^ Tang, Francis (2026-01-21). "Reiwa Shinsengumi leader Taro Yamamoto resigns from Upper House due to health". The Japan Times. Retrieved 2026-02-15.
- ^ 参院選、東京は合併選挙に [Tokyo to hold combined election for House of Councillors election]. Jiji Press, Ltd. (in Japanese). 2025-03-17. Retrieved 2026-02-15.
- ^ "Strength of the Political Groups in the House of Councillors". House of Councillors. 16 February 2026. Retrieved 16 February 2026.
External links
- "Composition of the House of Representatives". Retrieved August 5, 2016.
- "List of the Members of the House of Councillors". Retrieved August 5, 2016.