Jean Kleyn (born (1993-08-26)26 August 1993 in Krugersdorp, South Africa) is a South African rugby union player, currently playing with Western Province and the Stormers. His regular position is lock.
Kleyn first played provincial rugby for the Western Province U19s during the 2012 Under-19 Provincial Championship, also being promoted to the Western Province U21 side in the same season, as well as in 2013. He picked up two winner's medals, with Western Province ending both the 2012 Under-19 Provincial Championship and 2013 Under-21 Provincial Championship seasons as champions.
Despite being named in the 2013 and 2014 Vodacom Cup squads, Kleyn never made an appearance, suffering a knee injury in 2013 and an ankle injury in 2014.