Hiroo (written: 浩生, 浩郎, 広生, 宏央, 博大, 博夫, 博雄) is a masculine Japanese given name.

People with the name

Notable people with the name include:

• Hiroo Ishii (石井 浩郎, born 1964), Japanese baseball player and politician
• Hiroo Kanamori (金森 博雄, born 1936), Japanese seismologist
• Hiroo Kawai (河井 博大, born 1971), Japanese golfer
• Kotoryū Hiroo (琴龍 宏央, born 1972), Japanese sumo wrestler
• Masurao Hiroo (益荒雄 広生, born 1961), Japanese sumo wrestler
• Hiroo Ōhara (大原 博夫, 1894–1971), Governor of Hiroshima Prefecture
• Hiroo Onoda (小野田 寛郎, 1922–2014), Imperial Japanese Army intelligence officer
• Hiroo Shima (嶋 宏大, born 1963), Japanese ski jumper
• Hiroo Unoura (鵜浦 博夫, born 1949), Japanese businessman
• Hiroo Yamagata (山形 浩生, born 1964), Japanese writer

See also

• Hiro (given name)