Jean Roy Deysel (born 5 March 1985 in Virginia, Free State, South Africa) is a rugby union player for Toyota Verblitz in the Japanese Top League, having previously played the majority of his career for the Sharks in the Super Rugby competition.
Weighing in at 112 kg and standing 1.91m Deysel is known for his bruising running with ball in hand, often "bumping" the first defender.
Deysel signed a two-year contract to join Japanese side Toyota Verblitz at the conclusion of the 2014 Super Rugby season.