Mitsuyoshi (written: 三厳, 光亮, 光慶, 光美, 光聖 or 光由) is a masculine Japanese given name. Notable people with the name include:
, Japanese samurai , Japanese actor , Japanese manga artist , Japanese samurai , Japanese politician , Japanese mathematician
Mitsuyoshi (written: 光吉) is also a Japanese surname. Notable people with the surname include:
, Japanese video game composer