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 28, 2022)

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

Notes:
* No abbreviation
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.