Benjamin Karl Kelleher (born 18 August 1987) is a New Zealand-born Australian combat sports fighter where he competes in professional boxing, mixed martial arts, kickboxing and Muay Thai.
[4] On 27 April 2013, Kelleher fought Ray Dimachki for the WKN Australian super cruiserweight title under K1 rules.
[6] On 2 August 2014, Kelleher fought New Zealander Ramegus Te Wake for the WKBF South Pacific Cruiserweight title.
][11] Originally the fight was booked against Vik Grujic, however, it was later changed to Leon Johns.
On 13 December 2017, Kelleher was scheduled to fight Daniel Russell in a rematch on the Jeff Horn world title defence undercard.
After a successful win over New Zealander Nikolas Charalampous for the ANBF Australasian title, Kelleher fought Jai Opetaia for the first time in January 2018 for the Australian National Cruiserweight title.
[19] After a successful win over Robert Ferguson, Kelleher took on Jayden Joseph for his second attempt at the Australian National Cruiserweight title in July 2018.
[24] After his successful Australian title defence against Uria Afamasaga, in the biggest fight of his career, Keheller fought American Patrick Ferguson for the vacant IBF Pan Pacific Cruiserweight title.
[4] Kelleher won the fight by Unanimous decision, winning his first major regional title.