Demsey McKean (born 25 September 1990) is an Australian professional boxer, a former mixed martial arts fighter and former Muay Thai fighter. McKean's first major title bout in his career saw him defeat Australian boxer Willie Nasio for the Australian National heavyweight title. McKean won the bout by TKO. His first introduction into the rankings came after defeating Patrick Eneanya and Jonathan Rice. McKean has also been a sparring partner to two time unified world heavyweight champion, Anthony Joshua and interim WBC World heavyweight champion, Dillian Whyte.