Eiji Mitsuoka (Japanese: 光岡 映二, Mitsuoka Eiji, born January 1, 1976) is a retired Japanese professional mixed martial artist.
A professional competitor from 2001 until 2012, Mitsuoka fought for the UFC, DREAM, World Victory Road, PRIDE, Shooto, Cage Force, DEEP and King of the Cage promotions.
Mitsuoka made his UFC debut replacing an injured George Sotiropoulos against Takanori Gomi on February 26, 2012 at UFC 144.
Mitsuoka faced Nik Lentz in his Featherweight debut on August 11, 2012 at UFC 150.
[4] He lost the fight via first round TKO and was subsequently released from the promotion.