Photo Name In-House Group Constituency/Area
Ms. OBUCHI Yuko's photoMs. OBUCHI YukoLDPGumma 5th District
Mr. OCHI Takao's photoMr. OCHI TakaoLDPTokyo Bloc
Mr. OCHIAI Takayuki's photoMr. OCHIAI TakayukiCDPTokyo 6th District
Mr. ODAWARA Kiyoshi's photoMr. ODAWARA KiyoshiLDPTokyo Bloc
Mr. OGAWA Junya's photoMr. OGAWA JunyaCDPShikoku Bloc
Mr. OGUCHI Yoshinori's photoMr. OGUCHI YoshinoriKMTokai Bloc
Mr. OGUMA Shinji's photoMr. OGUMA ShinjiCDPTohoku Bloc
Mr. OGURA Masanobu's photoMr. OGURA MasanobuLDPTokyo 23rd District
Mr. OGUSHI Hiroshi's photoMr. OGUSHI HiroshiCDPSaga 2nd District
Mr. OGUSHI Masaki's photoMr. OGUSHI MasakiLDPHyogo 6th District
Mr. OKADA Katsuya's photoMr. OKADA KatsuyaCDPMie 3rd District
Mr. OKAJIMA Kazumasa's photoMr. OKAJIMA KazumasaCDPMinami Kanto Bloc
Ms. OKAMOTO Akiko's photoMs. OKAMOTO AkikoCDPTohoku Bloc
Mr. OKAMOTO Mitsunari's photoMr. OKAMOTO MitsunariKMKita Kanto Bloc
Mr. OKAMOTO Mitsunori's photoMr. OKAMOTO MitsunoriCDPTokai Bloc
Mr. OKASHITA Shohei's photoMr. OKASHITA ShoheiLDPKinki Bloc
Ms. OKAWARA Masako's photoMs. OKAWARA MasakoCDPKita Kanto Bloc
Mr. OKONOGI Hachiro's photoMr. OKONOGI HachiroLDPKanagawa 3rd District
Mr. OKUMA Kazuhide's photoMr. OKUMA KazuhideLDPKinki Bloc
Mr. OKUNO Shinsuke's photoMr. OKUNO ShinsukeLDPKinki Bloc
Mr. OKUNO Soichiro's photoMr. OKUNO SoichiroCDPMinami Kanto Bloc
Ms. OMI Asako's photoMs. OMI AsakoLDPGumma 1st District
Mr. ONIKI Makoto's photoMr. ONIKI MakotoLDPFukuoka 2nd District
Mr. ONISHI Hideo's photoMr. ONISHI HideoLDPTokyo 16th District
Mr. ONISHI Hiroyuki's photoMr. ONISHI HiroyukiLDPOsaka 1st District
Mr. ONISHI Kensuke's photoMr. ONISHI KensukeCDPAichi 13th District
Mr. ONO Keitaro's photoMr. ONO KeitaroLDPKagawa 3rd District
Mr. ONODERA Itsunori's photoMr. ONODERA ItsunoriLDPMiyagi 6th District
Mr. OOKA Toshitaka's photoMr. OOKA ToshitakaLDPShiga 1st District
Mr. OSAKA Seiji's photoMr. OSAKA SeijiCDPHokkaido 8th District
Mr. OSHIMA Atsushi's photoMr. OSHIMA AtsushiCDPSaitama 6th District
Mr. OSHIMA Tadamori's photoMr. OSHIMA TadamoriIndAomori 2nd District
Mr. OTA Akihiro's photoMr. OTA AkihiroKMTokyo 12th District
Mr. OTA Masataka's photoMr. OTA MasatakaKMHokuriku-Shinetsu Bloc
Ms. OTSUJI Kanako's photoMs. OTSUJI KanakoCDPKinki Bloc
Mr. OTSUKA Takashi's photoMr. OTSUKA TakashiIndOsaka 8th District
Mr. OTSUKA Taku's photoMr. OTSUKA TakuLDPSaitama 9th District
Mr. OZATO Yasuhiro's photoMr. OZATO YasuhiroLDPKagoshima 3rd District
Mr. OZAWA Ichiro's photoMr. OZAWA IchiroCDPIwate 3rd District

List of the In-House Groups in the House

In principle, House Members' names are spelled with the Hepburn system.
District: Single-seat constituency
Bloc: Proportional representation area

In-House Group: A group of House Members who engage in joint activities within the House. Usually, a political party forms an in-House group inside the House, but occasionally there are cases where a group is formed by (1) House Members who do not belong to a particular political party, (2) a political party and a House Member or Members who do not belong to any political party, or (3) two or more political parties.

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