| Name | In-House Group | Constituency/Area |
|---|---|---|
| NAGAOKA Keiko | LDP | Kita Kanto Bloc |
| NAGASAKA Yasumasa | LDP | Tokai Bloc |
| NAGASHIMA Akihisa | LDP | Tokyo Bloc |
| NAGATOMO Shinji | DPFP | Kyushu Bloc |
| NAGATOMO Yoshihiro | CDP | Minami Kanto Bloc |
| NAGATSUMA Akira | CDP | Tokyo 27th District |
| NAKAGAWA Hiromasa | KM | Hokuriku-Shinetsu Bloc |
| NAKAGAWA Yasuhiro | KM | Tokai Bloc |
| NAKAJIMA Katsuhito | CDP | Yamanashi 1st District |
| NAKAMURA Hayato | Ind | Ibaraki 7th District |
| NAKAMURA Hiroyuki | LDP | Hokkaido Bloc |
| NAKANISHI Kenji | LDP | Kanagawa 3rd District |
| NAKANO Hideyuki | LDP | Kita Kanto Bloc |
| NAKANO Hiromasa | KM | Hyogo 8th District |
| NAKASONE Yasutaka | LDP | Gunma 1st District |
| NAKATANI Gen | LDP | Kochi 1st district |
| NAKATANI Kazuma | CDP | Kanagawa 7th District |
| NAKATANI Shinichi | LDP | Minami Kanto Bloc |
| NAKATSUKA Hiroshi | JIP | Osaka 11th District |
| NEMOTO Taku | LDP | Tohoku Bloc |
| NEMOTO Yukinori | LDP | Aichi 15th District |
| NIKI Hirobumi | LDP | Tokushima 1st District |
| NISHIDA Kaoru | JIP | Osaka 6th District |
| NISHIDA Shoji | LDP | Hokuriku-Shinetsu Bloc |
| NISHIKAWA Atsushi | CDP | Aichi 5th District |
| NISHIKAWA Masahito | CDP | Hokkaido Bloc |
| NISHIME Kosaburo | LDP | Okinawa 4th District |
| NISHIMURA Chinami | CDP | Niigata 1st District |
| NISHIMURA Yasutoshi | LDP | Hyogo 9th District |
| NISHINO Daisuke | LDP | Kumamoto 2nd District |
| NISHIOKA Hideko | DPFP | Nagasaki 1st District |
| NISHIOKA Yoshitaka | DPFP | Minami Kanto Bloc |
| NISHIZONO Katsuhide | KM | Tokai Bloc |
| NIWA Hideki | LDP | Aichi 6th District |
| NODA Seiko | LDP | Gifu 1st District |
| NODA Yoshihiko | CDP | Chiba 14th District |
| NOMA Takeshi | CDP | Kagoshima 3rd District |
| NONAKA Atsushi | LDP | Kita Kanto Bloc |
| NUKAGA Fukushiro | Ind | Ibaraki 2nd District |
| NUMAZAKI Mitsuko | KM | Minami Kanto 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.