Hiromitsu (written: 博光, 博満, 宏光, 宏充, 弘光, 広光, 洋光 or 洋充) is a masculine Japanese given name. Notable people with the name include:

• Hiromitsu Agatsuma (上妻 宏光, born 1973), Japanese shamisen player
• Hiromitsu "Hiro-x" Aoki, J-pop musical artist
• Hiromitsu Horiike (堀池 洋充, born 1971), Japanese footballer
• Hiromitsu Isogai (礒貝 洋光, born 1969), Japanese footballer
• Hiromitsu Kadota (門田 博光, born 1948), Japanese baseball player
• Hiromitsu Kanehara (金原 弘光, born 1970), Japanese martial artist
• Hiromitsu Kanki (神吉 宏充, born 1940), Japanese shogi player
• Kitaseumi Hiromitsu (北瀬海 弘光, born 1948), Japanese sumo wrestler
• Hiromitsu Kitayama (北山 宏光, born 1985), Japanese idol, singer and actor
• Hiromitsu Miura (三浦 広光, born 1981), Japanese boxer and mixed martial artist
• Hiromitsu Ochiai (落合 博満, born 1953), Japanese baseball player and manager
• Hiromitsu Takahashi (高橋 宏光, born 1959), Japanese printmaker, often known simply as Hiromitsu
• Yutakayama Hiromitsu (豊山 広光, born 1947), Japanese sumo wrestler