 | This article needs to be updated.(October 2019) |
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).
Below are lists of representatives elected in Japanese general elections since 2003.
 | ||||
| Parliamentary groups/caucuses | Parties | Seats | ||
|---|---|---|---|---|
| Liberal Democratic Party/Assembly of independents Jiyūminshutō・mushozoku no kai | Liberal Democratic Party (LDP) Independents | 196 | ||
| Constitutional Democratic Party/Independents Rikken Minshutō・mushozoku | Constitutional Democratic Party (CDP) Social Democratic Party (SDP) | 148 | ||
| Nippon Ishin no Kai Nippon Ishin no Kai | Nippon Ishin no Kai | 38 | ||
| Democratic Party for the People/Independent club Kokumin Minshutō・mushozoku club | Democratic Party For the People (DPFP) | 28 | ||
| Komeito Kōmeitō | Komeito | 24 | ||
| Reiwa Shinsengumi Reiwa Shinsengumi | Reiwa Shinsengumi | 9 | ||
| Japanese Communist Party Nihon Kyōsantō | Japanese Communist Party (JCP) | 8 | ||
| Yūshi no Kai Yūshi no kai | Independents | 4 | ||
| Sanseitō Sanseitō | Sanseitō | 3 | ||
| Conservative Party of Japan Nippon Hoshutō | Conservative Party of Japan | 3 | ||
| Independents (not member of a caucus) Mushozoku | Independents (not member of a party) LDP (Speaker) CDP (Vice-Speaker) | 4 | ||
| Total | 465 | |||
List of members by parliamentary group and constituency. There are usually translations and abbreviations for parliamentary groups (会派, kaiha, current House of Representatives website translation: "In-House Group") used on the English pages of the House of Representatives website, [2]
Notes:
 | |||||||||
| Caucus (English name) [52] (domestic name) | Parties | Members | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Term | Total | ||||||||
| 29 July 2019 – 28 July 2025 (elected 2019, up 2025) | 26 July 2022 – 25 July 2028 (elected 2022, up 2028) | ||||||||
| PR | SNTV/FPTP | Subtotal | PR | SNTV/FPTP | Subtotal | ||||
| Government | 140 | ||||||||
| Liberal Democratic Party Jiyūminshutō | Liberal Democratic Party (LDP) | 19 | 33 | 52 | 18 | 43 | 61 | 113 | |
| Komeito Kōmeitō | Komeito | 7 | 7 | 14 | 6 | 7 | 13 | 27 | |
| Opposition | 91 | ||||||||
| The Constitutional Democratic Party of Japan and Social Democratic Party Rikken-minshu / Shamin / Mushozoku | Constitutional Democratic Party (CDP) Social Democratic Party (SDP) Independents | 9 | 15 | 24 | 8 | 10 | 18 | 42 | |
| Nippon Ishin (Japan Innovation Party) Nippon Ishin no Kai | Nippon Ishin no Kai | 4 | 2 | 6 | 8 | 4 | 12 | 18 | |
| Democratic Party For the People and The Shin-Ryokufukai Kokumin-minshutō / Shin-Ryokufūkai | Democratic Party For the People (DPFP) Independents | 3 | 2 | 5 | 3 | 3 | 6 | 11 | |
| Japanese Communist Party Nihon Kyōsantō | Japanese Communist Party (JCP) | 4 | 3 | 7 | 3 | 1 | 4 | 11 | |
| Reiwa Shinsengumi Reiwa Shinsengumi | Reiwa Shinsengumi | 2 | 0 | 2 | 2 | 1 | 3 | 5 | |
| The Party to Protect People from NHK NHK kara kokumin o mamoru tō | The Party to Protect the People from NHK | 1 | 0 | 1 | 1 | 0 | 1 | 2 | |
| Okinawa Whirlwind Okinawa no Kaze | Okinawa Social Mass Party | 0 | 1 | 1 | 0 | 1 | 1 | 2 | |
| Independents (government & opposition) | 1 | 4 | 5 | 1 | 3 | 4 | 9 | ||
| Independents Members not affiliated with any parliamentary caucus | LDP 1 (President) CDP 1 (Vice President) Sanseitō 1 Independents | ||||||||
| Total | 50 | 67 | 117 | 50 | 73 | 123 | 240 | ||
| Vacant: 8 majoritarian seats, three from Tokyo and one each from Kanagawa, Aichi, Osaka, Hyōgo and Wakayama (no by-elections before 2025 regular election without additional vacancies; Tokyo will hold an integrated by- and regular election) [53] | N/A | 0 | 7 | 7 | 0 | 1 | 1 | 8 | |
List of members by parliamentary group and constituency. There are usually translations and abbreviations for parliamentary groups (会派 kaiha, current House of Councillors website translation: "In-House Group") used on the English pages of the House of Representatives website [54] The official caucus names [55] are transcribed to Latin here:
Notes:
Tokushima 1st district (徳島県第1区) is a constituency of the House of Representatives in the Diet of Japan, located in Tokushima Prefecture on the island of Shikoku.
Aichi 5th district is a constituency of the House of Representatives in the Diet of Japan. It is located in Aichi Prefecture and consists of Nagoya's Nakamura and Nakagawa wards and the city of Kiyosu. As of 2016, 428,423 eligible voters were registered in the district.
Tokyo 17th district is a constituency of the House of Representatives in the Diet of Japan. It is located in northeastern parts of the former city of Tokyo and covers the ward of Katsushika. Before redistricting in 2022 it also included parts of Edogawa ward. As of 2012, 440,965 eligible voters were registered in the district.
Kyōto 2nd district is a constituency of the House of Representatives in the Diet of Japan. It is located in central Kyoto and consists of the Kyoto city wards of Sakyō, Higashiyama and Yamashina. As of 2012, 267,926 eligible voters were registered in the district.
Chiba 4th district is a constituency of the House of Representatives in the Diet of Japan, located in Western Chiba. As of 2016, 459,431 eligible voters were registered in the district. In the 2009 and 2012 general elections, the district had the lowest electoral weight throughout Japan at more than two times as many voters as the district with the highest electoral weight, Kōchi-3rd.
Kyōto 3rd district is a constituency of the House of Representatives in the Diet of Japan. It is located in South central Kyoto and consists of Kyoto city's Fushimi ward, the cities of Mukō and Nagaokakyō and the town of Ōyamazaki. As of 2012, 345,260 eligible voters were registered in the district.
Tottori 1st district is a parliamentary constituency in Tottori Prefecture that was created in 1994. It has been represented in the House of Representatives of the National Diet of Japan since 1996 by Shigeru Ishiba, the Prime Minister and President of the Liberal Democratic Party since 2024.
Hokkaidō 5th district is a constituency of the House of Representatives in the Diet of Japan. It consists of Atsubetsu ward and a portion of Shiroishi ward in Hokkaido's city of Sapporo and Ishikari Subprefecture excluding Sapporo and Ishikari city. As of 2009, 453,752 eligible voters were registered in the district.
Hokkaidō 7th district is a single-member constituency of the House of Representatives in the Diet of Japan. It is located in Japan's northernmost prefecture Hokkaidō. In a 2002 redistricting and reapportionment, Hokkaidō lost one seat and what had been the Hokkaido 13th district in the 1996 and 2000 general elections was renamed the 7th district. The previous 7th district was split up: the largest part merged into the 6th district and the remaining areas merged into the 10th and 12th districts.
Aomori 1st district is a single-member constituency of the House of Representatives in the national Diet of Japan. It is located in Northern Aomori and covers the cities of Aomori, Mutsu and the Higashitsugaru and Shimokita districts along with the northern half of the Kamikita District.
Ishikawa 2nd district is a single-member constituency of the House of Representatives, the lower house of the national Diet of Japan. It is located in Southern Ishikawa Prefecture and covers the cities of Komatsu, Kaga, Nomi, Hakusan, Nonoichi and the town of Kawakita.
Okayama 4th district is a single-member electoral district for the House of Representatives, the lower house of the national Diet of Japan. It is located in central coastal Okayama and covers the city of Kurashiki and the town of Hayashima. As of September 2012, 367,702 eligible voters were registered in the district, giving it slightly below average vote weight.
Yamanashi 1st district is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan located in western Yamanashi Prefecture. As of September 2022 it had 424,557 eligible voters.
Gifu 1st district is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan. It is located in Gifu Prefecture and covers the capital city Gifu. In September 2023 the district had 334,642 eligible voters. In 2012 they were 325,090.
Hokkaidō 2nd district is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan. It is located in Sapporo, the prefectural capital of Hokkaido and consists of the Higashi ("East") ward and most of the Kita ("North") ward.
Hokkaidō 4th district (北海道[第]4区) is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan. It represents Shiribeshi Subprefecture of Hokkaido as well as Teine Ward, a portion of Nishi Ward of Sapporo city and Ishikari city.
Akita 1st district is a single-member constituency of the House of Representatives, the lower house of the National Diet of Japan. It is located in the Tōhoku region of the island of Honshu, in Akita Prefecture. The district contains the entirety of the city of Akita, making it the only district in Tōhoku to entirely contain a single municipality.
Akita 2nd district is a single-member constituency of the House of Representatives, the lower house of the National Diet of Japan. It consists of the northern part of Akita Prefecture, including the cities of Katagami, Kazuno, Kitaakita, Noshiro, Ōdate, and Oga, and the districts of Kazuno, Kitaakita, Minamiakita, and Yamamoto.
This is a list of Representatives elected to the House of Representatives of Japan at the 2021 general election, held on 31 October 2021.
Toshitaka Ōoka(Japanese: ja:大岡敏孝) is a Japanese politician of the Liberal Democratic Party, who serves as a member of the House of Representatives from Shiga Prefecture. First elected in 2014, he was most recently elected in the 2021 election defeating Alex Saito who ran as the candidate of Democratic Party for the People. In 2024, he lost a rematch against Saito who this time represented Nippon Ishin no Kai.