Ryosuke Irie (?? ??, Irie Ryosuke, born 24 January 1990) is a Japanese competitive swimmer who competes in backstroke events.
He is a Kinki University student in Osaka.
He won a silver medal in the 200 metre backstroke and a bronze in the 100 metre backstroke at the 2012 Summer Olympics, along with a silver in the men's 4 × 100 m medley with the Japanese team.
His beautiful backstroke technique has often been compared to Roland Matthes, who was described as the Rolls-Royce of swimming.