List of members of the Diet of Japan
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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.