Juan-Pierre Francois Mostert (born 22 January 1988) is a former South African rugby union player that played first class rugby between 2011 and 2017. He played either as a flanker or eighthman and played for the in 2011, and for the from 2012 to 2017. He also played for in the Varsity Cup.
Mostert was involved in a car accident in July 2017, resulting in a broken neck and paralysis.