Toshio Irie (入江 稔夫) was a Japanese swimmer. Irie was born in Takatsuki, Osaka, and graduated from the Engineering Department of Waseda University. He finished fourth in the 100 m backstroke at the 1928 Summer Olympics. Later that year, on October 14, 1928, he set a new world record in the 200 m at 2 minutes 37.8 seconds. At the 1932 Summer Olympics, Irie won the silver medal in the 100 m backstroke, with teammates Masaji Kiyokawa and Kentaro Kawatsu taking the gold and bronze.