Jazmin Roxy "Jazz" Carlin (born 17 September 1990) is a former British competitive swimmer, who previously represented Wales and the Great Britain swimming team. She competed primarily in endurance freestyle events,[1] and was based at the University of Bath.[3] She won gold for Wales at the 2014 Commonwealth Games, double gold for Great Britain in the 400 metres and 800 metres freestyle at both the 2014 European Championships (long course) and the 2015 European Championships (short course) before winning two silver medals for Great Britain in the same events behind Katie Ledecky at the 2016 Summer Olympics.