Composition
of the House

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

(As of October 29, 2025)

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

H

Name	In-House Group	Constituency/Area
HAGIHARA Kei	JIP	Osaka 9th District
HAGIUDA Koichi	LDP	Tokyo 24th District
HAMACHI Masakazu	KM	Kyushu Bloc
HAMADA Yasukazu	LDP	Chiba 12th District
HANASHI Yasuhiro	LDP	Ibaraki 3rd District
HARADA Masahiro	CDP	Tohoku Bloc
HARAGUCHI Kazuhiro	CDP	Saga 1st District
HASEGAWA Junji	LDP	Ehime 3rd District
HASEGAWA Kaichi	CDP	Kita Kanto Bloc
HASHIMOTO Keigo	CDP	Kinki Bloc
HASHIMOTO Mikihiko	DPFP	Saitama 13th District
HATANO Tsubasa	CDP	Hokuriku-Shinetsu Bloc
HATOYAMA Jiro	LDP	Fukuoka 6th District
HATOYAMA Kiichiro	DPFP	Tokyo Bloc
HAYASHI Yoshimasa	LDP	Yamaguchi 3rd District
HAYASHI Yumi	JIP	Kinki Bloc
HINO Saria	DPFP	Aichi 7th District
HIRABAYASHI Akira	KM	Chugoku Bloc
HIRAGUCHI Hiroshi	LDP	Hiroshima 2nd District
HIRAI Takuya	LDP	Shikoku Bloc
HIRAIWA Masaki	Ind	Kinki Bloc
HIRANUMA Shojiro	LDP	Chugoku Bloc
HIRAOKA Hideo	CDP	Chugoku Bloc
HIRASAWA Katsuei	LDP	Tokyo 17th District
HIROSE Ken	LDP	Oita 2nd District
HONDA Taro	LDP	Kyoto 5th District
HONJO Satoshi	CDP	Chiba 8th District
HORIKAWA Akiko	JCP	Kinki Bloc
HORIUCHI Noriko	LDP	Yamanashi 2nd District
HOSAKA Yasushi	LDP	Saitama 4th District
HOSHINO Tsuyoshi	LDP	Minami Kanto Bloc
HOSONO Goshi	LDP	Shizuoka 5th District

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.