Daniel Owen Jervis (born 9 June 1996) is a British swimmer, from Resolven, Neath in South Wales.

[2][3][4] Jervis competed in the men's 1500 metre freestyle event at the 2017 World Aquatics Championships.

[5][6] At the 2018 Commonwealth Games, competing for Wales, he won the silver medal in the men's 1500 metre freestyle event.

It was the third time he had won the 800 metres event and the fifth consecutive time that he had won the 1500 metres event.

[8] After winning the 1500 metres freestyle for the sixth time, at the 2024 Aquatics GB Swimming Championships, Jervis sealed his place at the 2024 Summer Olympics.