Hironobu (written 博信, 浩宣, 博允 or 裕信) is a masculine Japanese given name. Notable people with the name include:
Hironobu Haga (芳賀 博信) (born 1982), Japanese footballer
Kachō Hironobu (華頂 博信) (1905–1970), Japanese prince
Hironobu Kageyama (影山 浩宣) (born 1961), Japanese singer and musician
Hironobu Nagahata (born 1979), Japanese swimmer
Hironobu Ono (小野 博信) (born 1987), Japanese footballer
Hironobu Sakaguchi (坂口 博信) (born 1962), Japanese video game designer, director and producer
Hironobu Takesaki (竹崎 博允) (born 1944), Japanese lawyer
Hironobu Yasuda (安田 裕信) (born 1983), Japanese racing driver
