Rassie is a nickname , often a shortened form of the names Erasmus:
Rassie Erasmus (born 1972), South African rugby union coach and former player Rassie Pieterse (born 1983), South African field hockey goalkeeper Rassie van der Dussen (born 1989), South African cricketer Rassie Jansen van Vuuren (born 1985), South African rugby union player
Given name Rassie Hoskins White (1862–1944), American clubwoman