Iwao (written: 巖, 巌, 岩夫, 岩尾, 岩生, 岩男 or 岩雄) is both a masculine Japanese given name and a Japanese surname. Notable people with the name include:
Surname:
Junko Iwao (岩男 潤子) (born 1970), Japanese voice actress and singerKen Iwao (岩尾 憲) (born 1988), Japanese footballerSachimi Iwao (岩尾 幸美) (born 1976), Japanese field hockey playerSeiichi Iwao (岩生 成一) (1900–1988), Japanese academic, historian and writerGiven name:
Iwao Ayusawa (鮎沢 巌) (1894–1972), Japanese diplomatIwao Hakamada (袴田 巖) (born 1936), Japanese boxerIwao Horiuchi (堀内 岩雄) (born 1941), Japanese sport wrestlerIwao Matsuda (松田 岩夫) (born 1937), Japanese politicianIwao Matsuda (general) (松田 巌) (1895–1979), Japanese generalŌyama Iwao (大山 巌) (1842–1916), Japanese field marshalIwao Taka (高 巌), Japanese academicIwao Takamoto (1925–2007), Japanese-American animator, television producer and film directorIwao Yamane (山根 巌) (born 1976), Japanese footballerIwao Yamawaki (山脇 巌) (1898–1987), Japanese photographerFictional characters:
Iwao (Kinnikuman) (イワオ), character in the manga series Kinnikuman