Ryosuke Irie, a renowned Japanese swimmer, has made significant strides in his career since he began swimming at age four in Osaka, Japan. Initially, he followed his older brother Shinpei into the sport but did not enjoy it. His mother promised to let him quit after a year if he still disliked it, but she forgot to honour her promise.

| Season | Event | Rank |
|---|---|---|
| 2021 | Men's 4 x 100m Medley Relay | 6 |
| 2021 | Men's 200m Backstroke | 7 |
| 2021 | Men's 100m Backstroke | 9 |
| 2016 | Men's 4 x 100m Medley Relay | 5 |
| 2016 | Men's 100m Backstroke | 7 |
| 2016 | Men's 200m Backstroke | 8 |
| 2012 | Men's 200m Backstroke | S Silver |
| 2012 | Men's 4 x 100m Medley Relay | S Silver |
| 2012 | Men's 100m Backstroke | B Bronze |
| 2008 | Men's 200m Backstroke | 5 |
One of Irie's most memorable achievements is winning silver in the men's 4x100m medley relay at the 2012 Olympic Games in London. Despite facing a shoulder injury before the 2012 Olympics and a hernia injury in 2013, he continued to excel. His resilience is evident as he secured one bronze and two silver medals at the London Games.
Irie's accolades include receiving an Excellence Award at the Japan Aquatics Awards in 2016, 2017, and 2018. He also won the Osaka Sports Excellence Award in 2015 and 2017. In 2013, he was named Swimmer of the Year by the Japan Swimming Federation.
Irie cites his mother as the most influential person in his career. His sporting philosophy is encapsulated in his motto: "Never lose to ones whom you have defeated." He idolises Japanese swimmer Kosuke Kitajima.
After considering retirement post-2016 Rio Olympics, Irie relocated to San Diego, CA, USA, to join Team Elite training group. This move was aimed at preparing for the 2020 Olympic Games. He returned to Japan in 2020 with renewed perspective and vigour for swimming.
Residing in Tokyo, Japan, Irie is fluent in English and Japanese. He holds a degree in Law from Kindai University. Outside of swimming, he enjoys karaoke.
Looking ahead, Irie aims to compete at the 2024 Olympic Games in Paris. His dedication to the sport remains unwavering as he continues to train and prepare for future competitions.
Irie has shared his journey through two autobiographies: 'Swim Towards a Dream: What I Learned From the Sport' (2013) and 'Still, I Keep Swimming' (2020). These books offer insights into his experiences and lessons learned throughout his career.
Irie's journey from a reluctant swimmer to an accomplished athlete is a testament to his perseverance and dedication. His achievements and future goals continue to inspire many in the world of sports.
Ryosuke Irie, a renowned Japanese swimmer, has made significant strides in his career since he began swimming at age four in Osaka, Japan. Initially, he followed his older brother Shinpei into the sport but did not enjoy it. His mother promised to let him quit after a year if he still disliked it, but she forgot to honour her promise.