Composition
of the House

Officers of the House
Strength of the In-House Groups in the House of Representatives
List of Members

(As of April 16, 2024)

A	B	C	D
E	F	G	H
I	J	K	L
M	N	O	P
Q	R	S	T
U	V	W	X
Y	Z

O

Name	In-House Group	Constituency/Area
OBUCHI Yuko	LDP	Gunma 5th District
OCHI Takao	LDP	Tokyo Bloc
OCHIAI Takayuki	CDP	Tokyo 6th District
ODAWARA Kiyoshi	LDP	Tokyo 21st District
OGATA Rintaro	YK	Fukuoka 9th District
OGAWA Junya	CDP	Kagawa 1st District
OGUCHI Yoshinori	KM	Tokai Bloc
OGUMA Shinji	CDP	Fukushima 4th District
OGURA Masanobu	LDP	Tokyo 23rd District
OGUSHI Hiroshi	CDP	Saga 2nd District
OGUSHI Masaki	LDP	Kinki Bloc
OHNO Keitaro	LDP	Kagawa 3rd District
OHSAKA Seiji	CDP	Hokkaido 8th District
OISHI Akiko	*	Kinki Bloc
OKADA Katsuya	CDP	Mie 3rd District
OKAMOTO Akiko	CDP	Tohoku Bloc
OKAMOTO Mitsunari	KM	Tokyo 12th District
OKAWARA Masako	CDP	Tokyo Bloc
OKUNO Shinsuke	LDP	Kinki Bloc
OKUNO Soichiro	CDP	Chiba 9th District
OKUSHITA Takemitsu	JIFE	Osaka 7th District
OMI Asako	LDP	Kita Kanto Bloc
ONIKI Makoto	LDP	Fukuoka 2nd District
ONISHI Hideo	LDP	Tokyo 16th District
ONISHI Kensuke	CDP	Aichi 13th District
ONO Taisuke	JIFE	Tokyo Bloc
ONODERA Itsunori	LDP	Miyagi 6th District
OOKA Toshitaka	LDP	Shiga 1st District
OSHIMA Atsushi	CDP	Saitama 6th District
OTSUKA Taku	LDP	Saitama 9th District
OTSUKI Kureha	CDP	Hokkaido Bloc
OZAKI Masanao	LDP	Kochi 2nd district
OZATO Yasuhiro	LDP	Kyushu Bloc
OZAWA Ichiro	CDP	Tohoku Bloc

Notes:
* No abbreviation
List of the In-House Groups in the House

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.