Tadahiro (written: 忠熙, 忠寛, 忠弘, 忠広, 忠宏, 忠洋 or 忠恕) is a masculine Japanese given name. Notable people with the name include:
Tadahiro Aizawa (相沢 忠洋) (1926-1989), Japanese amateur archaeologist
Tadahiro Akiba (秋葉 忠宏) (born 1975), Japanese footballer and manager
Tadahiro Ando (安藤 忠恕) (1941–2010), Japanese politician
Konoe Tadahiro (近衛 忠熙) (1808–1898), Japanese noble
Tadahiro Kosaka (小坂 忠広) (born 1960), Japanese racewalker
Makino Tadahiro (牧野 忠寛) (1741–1766), Japanese daimyō
Tadahiro Matsushita (松下 忠洋) (1939–2012), Japanese politician
Tadahiro Nomura (野村 忠宏) (born 1974), Japanese judoka
Tadahiro Ogino (荻野 忠寛) (born 1982), Japanese baseball player
Tadahiro Sasaki (佐々木 忠広) (born 1970), Japanese boxer
Tadahiro Sekimoto (関本 忠弘) (1926–2007), Japanese engineer
Tadahiro Takayama (高山 忠洋) (born 1978), Japanese golfer
