Steve "The Smashing Machine" Mckinnon (born 23 November 1976 in Scotland^{[citation needed]}) is a WBC Hall of Fame, 8 time world champion Australian, Heavyweight kickboxer, fighting out of the Bulldog Gym in Sydney. He competed in Glory and is the former WBC Muaythai Super Cruiserweight World Champion.^[1]

McKinnon began his training in his father's Karate school, Torakan, at the age of 4 in Shotokan Karate, attaining his black belt, fighting and winning Karate tournaments before he began his kickboxing career at 16. He faced many notable opponents such as Ashwin Balrak, Paul Slowinski, Nathan Corbett and Ramazan Ramazanov.

He won 8 world titles throughout his career, including winning the WBC world title in 2008 and defending it 3 times. He retired vacating that title.

His last fight was a WKBF world heavy weight title win in 2017.

In 2020 he was inducted into the WBC Hall of Fame.

McKinnon was set to face Nenad Pagonis at Glory 7: Milan in Milan, Italy,^[2] but his opponent changed to Michael Duut, whom he lost to via a unanimous decision.^[3][4][5] He then competed in the eight-man tournament at Glory 9: New York - 2013 95kg Slam in New York City on 22 June 2013^[6][7] and lost against Filip Verlinden by decision in the quarter-finals.^[8][9][10]

• WKBF World Title x 2 (2001 & 2017)

• World Boxing Council Muaythai | WBC Muaythai World Super Cruiserweight Champion. X 4 (2008, 2010, 2010, 2012)

• ISKA Australian Cruiserweight title

• IKKC Intercontinental Heavyweight Muay Thai Title

• New South Wales Muaythai Title