Seiji Fukushi is a Japanese actor represented by Owlm. He was a member of Imai Office until 31 March 2015

Fukushi's first terrestrial drama was on the NHK drama Otokomae! which also ran a sequel. In December 2008, he, along with Koichi Otake, Takumi Saito, and Kazuki Namioka, formed the theater unit Run. It was announced on 1 April 2015 that Fukushi, with Tetsu Watanabe and Masaki Sawai, moved to Owlm.