Calum George Jarvis (born 12 May 1992) is a Welsh competitive swimmer who has represented Great Britain in World Championships and the Olympics, and Wales in the Commonwealth Games.

In 2014, he competed at the Commonwealth Games in Glasgow as part of the Welsh team, winning the bronze medal in the 200m freestyle.

In 2015 at the World Championships, he formed part of the Great Britain gold medal-winning men's 4 x 200-metre freestyle relay team.

[5] At the 2020 Tokyo Olympics, Jarvis was part of the British team that won the men's 4 × 200 metre freestyle relay.

[6] Jarvis was appointed Member of the Order of the British Empire (MBE) in the 2022 New Year Honours for services to swimming.