Dimuth Akalanka Peiris also known as Dimuth Peiris (born 11 January 2000) is a Sri Lankan male swimmer and a national record holder in swimming. He represented Sri Lanka at the 2018 Commonwealth Games and competed in swimming competitions. In August 2018, he became the first ever Sri Lankan student to sit for a Sri Lankan GCE A/L examinations outside Sri Lanka as he was granted special permission to write A/L exams in Jakarta, Indonesia just prior to his preparations for the 2018 Asian Games. He represented Sri Lanka at the 2018 Summer Youth Olympics in October 2018 which was held in Argentina. He also went onto represent Sri Lanka at the 2019 World Aquatics Championships as the only male swimmer.