Grenton Lionel Starlone Mapoe (born 13 July 1988) is a former South African professional rugby union player. He plays mostly as a centre or winger. He plays for the in the United Rugby Championship and for the in the Currie Cup. He played for the in Super Rugby, the in the Currie Cup and the in the Rugby Challenge from 2011 to 2019, having previously played for the Cheetahs and the on loan for the 2013 Super Rugby season.