| Photo | Name | Group | Constituency/Area |
 | Mr. IBAYASHI Tatsunori | LDP | Shizuoka 2nd District |
 | Mr. IBUKI Bunmei | Ind | Kyoto 1st District |
 | Mr. IDE Yosei | YP | Hokuriku-Shinetsu Block |
 | Mr. IKEDA Michitaka | LDP | Chugoku Block |
 | Mr. IKEDA Yoshitaka | LDP | Aichi 3rd District |
 | Mr. IMAEDA Soichiro | LDP | Aichi 14th District |
 | Mr. IMAI Masato | JRP | Tokai Block |
 | Mr. IMAMURA Hirofumi | JRP | Tokyo Block |
 | Mr. IMAMURA Masahiro | LDP | Saga 2nd District |
 | Mr. IMAZU Hiroshi | LDP | Hokkaido 6th District |
 | Ms. INADA Tomomi | LDP | Fukui 1st District |
 | Mr. INATSU Hisashi | NK | Hokkaido 10th District |
 | Mr. INO Toshiro | LDP | Gumma 2nd District |
 | Mr. INOUE Hidetaka | JRP | Osaka 1st District |
 | Mr. INOUE Shinji | LDP | Tokyo 25th District |
 | Mr. INOUE Takahiro | LDP | Fukuoka 1st District |
 | Mr. INOUE Yoshihisa | NK | Tohoku Block |
 | Mr. ISA Shinichi | NK | Osaka 6th District |
 | Mr. ISAKA Nobuhiko | YP | Kinki Block |
 | Mr. ISHIBA Shigeru | LDP | Tottori 1st District |
 | Mr. ISHIDA Masatoshi | LDP | Wakayama 2nd District |
 | Mr. ISHIDA Noritoshi | NK | Shikoku Block |
 | Mr. ISHIHARA Hirotaka | LDP | Tokyo 3rd District |
 | Mr. ISHIHARA Nobuteru | LDP | Tokyo 8th District |
 | Mr. ISHIHARA Shintaro | JRP | Tokyo Block |
 | Mr. ISHII Keiichi | NK | Kitakanto Block |
 | Mr. ISHIKAWA Akimasa | LDP | Kitakanto Block |
 | Mr. ISHIZAKI Toru | LDP | Niigata 1st District |
 | Mr. ISHIZEKI Takashi | JRP | Kitakanto Block |
 | Mr. ITO Nobuhisa | JRP | Osaka 11th District |
 | Mr. ITO Shintaro | LDP | Miyagi 4th District |
 | Mr. ITO Tadahiko | LDP | Aichi 8th District |
 | Mr. ITO Tatsuya | LDP | Tokyo 22nd District |
 | Mr. ITO Wataru | NK | Tokai Block |
 | Mr. ITO Yoshitaka | LDP | Hokkaido 7th District |
 | Mr. IWANAGA Hiroki | JRP | Kinki Block |
 | Mr. IWATA Kazuchika | LDP | Saga 1st District |
 | Mr. IWAYA Takeshi | LDP | Oita 3rd District |
 | Mr. IZUHARA Yasuji | LDP | Shikoku Block |
 | Mr. IZUMI Kenta | DPJ | Kinki Block |