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

The following table lists members of the House of Representatives by constituency and 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.

Constituency Elected members Elected party Parliamentary group NotesHokkaido 12 single-member and 8 proportional representation seats.Hokkaido Prefecture Hokkaido-1st Takahiro Katō Liberal Democratic LDP Hokkaido-2nd Yūsuke Takahashi Liberal Democratic LDP Hokkaidō-3rd Hirohisa Takagi Liberal Democratic LDP Hokkaidō-4th Hiroyuki Nakamura Liberal Democratic LDP Hokkaidō-5th Yoshiaki Wada Liberal Democratic LDP Hokkaidō-6th Kuniyoshi Azuma Liberal Democratic LDP Hokkaidō-7th Takako Suzuki Liberal Democratic LDP Hokkaidō-8th Jun Mukōyama Liberal Democratic LDP Hokkaidō-9th Hideki Matsushita Liberal Democratic LDP Hokkaidō-10th Hiroshi Kamiya CRA CRA Hokkaidō-11th Kōichi Nakagawa Liberal Democratic LDP Hokkaidō-12th Arata Takebe Liberal Democratic LDP Hokkaido Block Hokkaidō block Yoshitaka Itō Liberal Democratic LDP Hokkaidō block Hidemichi Satō CRA CRA Hokkaidō block Kōichi Watanabe Liberal Democratic LDP Hokkaidō block Nagisa Muraki Liberal Democratic LDP Hokkaidō block Tomoko Ukishima CRA CRA Hokkaidō block Yūri Yoshida Liberal Democratic LDP Hokkaidō block Hidetake Usuki DPFP DPFP Hokkaidō block Tatsumaru Yamaoka CRA CRA Tōhoku 21 single-member and 12 proportional representation seats.Aomori Prefecture Aomori-1st Jun Tsushima Liberal Democratic LDP Aomori-2nd Junichi Kanda Liberal Democratic LDP Aomori-3rd Jiro Kimura Liberal Democratic LDP Iwate Prefecture Iwate-1st Takeshi Shina CRA CRA Iwate-2nd Shun'ichi Suzuki Liberal Democratic LDP Iwate-3rd Takashi Fujiwara Liberal Democratic LDP Miyagi Prefecture Miyagi-1st Tōru Doi Liberal Democratic LDP Miyagi-2nd Katsuyuki Watanabe Liberal Democratic LDP Miyagi-3rd Akihiro Nishimura Liberal Democratic LDP Miyagi-4th Chisato Morishita Liberal Democratic LDP Miyagi-5th Itsunori Onodera Liberal Democratic LDP Akita Prefecture Akita-1st Hiroyuki Togashi Liberal Democratic LDP Akita-2nd Junji Fukuhara Liberal Democratic LDP Akita-3rd Toshihide Muraoka DPFP DPFP Yamagata Prefecture Yamagata-1st Hiroaki Endo Liberal Democratic LDP Yamagata-2nd Norikazu Suzuki Liberal Democratic LDP Yamagata-3rd Ayuko Kato Liberal Democratic LDP Fukushima Prefecture Fukushima-1st Naotoshi Nishiyama Liberal Democratic LDP Fukushima-2nd Taku Nemoto Liberal Democratic LDP Fukushima-3rd Kentaro Uesugi Liberal Democratic LDP Fukushima-4th Ryutaro Sakamoto Liberal Democratic LDP Tohoku Block Tōhoku block Akinori Eto Liberal Democratic LDP Tōhoku block Kenichi Shōji CRA CRA Tōhoku block Nobuhide Minorikawa Liberal Democratic LDP Tōhoku block Hiromasa Yonai Liberal Democratic LDP Tōhoku block Yoshifu Arita CRA CRA Tōhoku block Shintaro Ito Liberal Democratic LDP Tōhoku block Makoto Sasaki DPFP DPFP Tōhoku block Ichirō Kanke Liberal Democratic LDP Tōhoku block Masamune Wada Sanseitō Sanseitō Tōhoku block Emi Kaneko CRA CRA Tōhoku block Kenya Akiba Liberal Democratic LDP Tōhoku block Takumi Hayashi Team Mirai Team Mirai Northern Kanto (Kita Kanto) 33 single-member and 19 proportional representation seats.Ibaraki Prefecture Ibaraki-1st Yoshinori Tadokoro Liberal Democratic LDP Ibaraki-2nd Fukushiro Nukaga Liberal Democratic LDP Ibaraki-3rd Yasuhiro Hanashi Liberal Democratic LDP Ibaraki-4th Hiroshi Kajiyama Liberal Democratic LDP Ibaraki-5th Satoshi Asano DPFP DPFP Ibaraki-6th Ayano Kunimitsu Liberal Democratic LDP Ibaraki-7th Hayato Nakamura Independent Independent Tochigi Prefecture Tochigi-1st Hajime Funada Liberal Democratic LDP Tochigi-2nd Kiyoshi Igarashi Liberal Democratic LDP Tochigi-3rd Shintaro Watanabe Independent Independent Tochigi-4th Masaru Ishizaka Liberal Democratic LDP Tochigi-5th Toshimitsu Motegi Liberal Democratic LDP Gunma Prefecture Gunma-1st Yasutaka Nakasone Liberal Democratic LDP Gunma-2nd Toshiro Ino Liberal Democratic LDP Gunma-3rd Hiroyoshi Sasagawa Liberal Democratic LDP Gunma-4th Tatsuo Fukuda Liberal Democratic LDP Gunma-5th Yūko Obuchi Liberal Democratic LDP Saitama Prefecture Saitama-1st Hideki Murai Liberal Democratic LDP Saitama-2nd Yoshitaka Shindō Liberal Democratic LDP Saitama-3rd Hitoshi Kikawada Liberal Democratic LDP Saitama-4th Yasushi Hosaka Liberal Democratic LDP Saitama-5th Yutaka Ihara Liberal Democratic LDP Saitama-6th Akihito Obana Liberal Democratic LDP Saitama-7th Hideyuki Nakano Liberal Democratic LDP Saitama-8th Masahiko Shibayama Liberal Democratic LDP Saitama-9th Taku Otsuka Liberal Democratic LDP Saitama-10th Susumu Yamaguchi Liberal Democratic LDP Saitama-11th Ryuji Koizumi Liberal Democratic LDP Saitama-12th Atsushi Nonaka Liberal Democratic LDP Saitama-13th Hiromi Mitsubayashi Liberal Democratic LDP Saitama-14th Makoto Fujita Liberal Democratic LDP Saitama-15th Ryosei Tanaka Liberal Democratic LDP Saitama-16th Shinako Tsuchiya Liberal Democratic LDP Kita Kanto Block Kita Kantō block Kazuo Yana Liberal Democratic LDP Kita Kantō block Keiichi Ishii CRA Independent Kita Kantō block Keiko Nagaoka Liberal Democratic LDP Kita Kantō block Takumi Suzuki Liberal Democratic LDP Kita Kantō block Mikihiko Hashimoto DPFP DPFP Kita Kantō block Keiichi Koshimizu CRA CRA Kita Kantō block Kazuyuki Nakane Liberal Democratic LDP Kita Kantō block Mayuko Toyota Sanseitō Sanseitō Kita Kantō block Kazuko Mutō Team Mirai Team Mirai Kita Kantō block Masayoshi Saijō Liberal Democratic LDP Kita Kantō block Takahiro Fukushige CRA CRA Kita Kantō block Akimasa Ishikawa Liberal Democratic LDP Kita Kantō block Yūji Kashiwakura Nippon Ishin Nippon Ishin Kita Kantō block Asako Omi Liberal Democratic LDP Kita Kantō block Yoshihiro Suzuki DPFP DPFP Kita Kantō block Atsushi Oshima CRA CRA Kita Kantō block Megumi Maekawa Liberal Democratic LDP Kita Kantō block Tetsuya Shiokawa JCP JCP Kita Kantō block Hitomi Aoki Sanseitō Sanseitō South Kanto (Minami Kanto) 36 single-member and 23 proportional representation seats.Chiba Prefecture Chiba-1st Hiroaki Kadoyama Liberal Democratic LDP Chiba-2nd Takayuki Kobayashi Liberal Democratic LDP Chiba-3rd Hirokazu Matsuno Liberal Democratic LDP Chiba-4th Yūsuke Kashima Liberal Democratic LDP Chiba-5th Arfiya Eri Liberal Democratic LDP Chiba-6th Hiromichi Watanabe Liberal Democratic LDP Chiba-7th Ken Saitō Liberal Democratic LDP Chiba-8th Izumi Matsumoto Liberal Democratic LDP Chiba-9th Hisato Tamiya Liberal Democratic LDP Chiba-10th Masaaki Koike Liberal Democratic LDP Chiba-11th Eisuke Mori Liberal Democratic Independent Chiba-12th Yasukazu Hamada Liberal Democratic LDP Chiba-13th Hisashi Matsumoto Liberal Democratic LDP Chiba-14th Yoshihiko Noda CRA CRA Kanagawa Prefecture Kanagawa-1st Natsuko Maruo Liberal Democratic LDP Kanagawa-2nd Shōbun Nitta Liberal Democratic LDP Kanagawa-3rd Kenji Nakanishi Liberal Democratic LDP Kanagawa-4th Marina Nagata Liberal Democratic LDP Kanagawa-5th Manabu Sakai Liberal Democratic LDP Kanagawa-6th Naoki Furukawa Liberal Democratic LDP Kanagawa-7th Keisuke Suzuki Liberal Democratic LDP Kanagawa-8th Hidehiro Mitani Liberal Democratic LDP Kanagawa-9th Masahiro Uehara Liberal Democratic LDP Kanagawa-10th Kazunori Tanaka Liberal Democratic LDP Kanagawa-11th Shinjiro Koizumi Liberal Democratic LDP Kanagawa-12th Tsuyoshi Hoshino Liberal Democratic LDP Kanagawa-13th Kōichirō Maruta Liberal Democratic LDP Kanagawa-14th Jiro Akama Liberal Democratic LDP Kanagawa-15th Taro Kono Liberal Democratic LDP Kanagawa-16th Masashi Satō Liberal Democratic LDP Kanagawa-17th Karen Makishima Liberal Democratic LDP Kanagawa-18th Daishiro Yamagiwa Liberal Democratic LDP Kanagawa-19th Liberal Democratic LDP Kanagawa-20th Yui Kanazawa Liberal Democratic LDP Yamanashi Prefecture Yamanashi-1st Shinichi Nakatani Liberal Democratic LDP Yamanashi-2nd Noriko Horiuchi Liberal Democratic LDP Minami Kanto Block Minami Kantō block Harunobu Nagano Liberal Democratic LDP Minami Kantō block Hideo Tsunoda CRA CRA Minami Kantō block Satoshi Itō Liberal Democratic LDP Minami Kantō block Ryo Fuzuki Liberal Democratic LDP Minami Kantō block Jesús Fukasaku DPFP DPFP Minami Kantō block Mitsuko Numazaki CRA CRA Minami Kantō block Michio Kawai Team Mirai Team Mirai Minami Kantō block Hina Iwasaki Liberal Democratic LDP Minami Kantō block Megu Nakaya Sanseitō Sanseitō Minami Kantō block Naoki Harada CRA CRA Minami Kantō block Ryuna Kanemura Nippon Ishin Nippon Ishin Minami Kantō block Yoshitaka Nishioka DPFP DPFP Minami Kantō block Hirofumi Ryu CRA CRA Minami Kantō block Eri Yamada Team Mirai Team Mirai Minami Kantō block Kimie Hatano JCP JCP Minami Kantō block Yūichi Gotō CRA CRA Minami Kantō block Seiko Kudō Sanseitō Sanseitō Minami Kantō block Junko Okano DPFP DPFP Minami Kantō block Yuki Waseda CRA CRA Minami Kantō block Mitsuhiro Yokota Nippon Ishin Nippon Ishin Minami Kantō block Shūhei Kobayashi Team Mirai Team Mirai Minami Kantō block Kaname Tajima CRA CRA Minami Kantō block Joji Yamamoto Reiwa Independent Tokyo