Colin Kenna (born 28 July 1976) is an Irish boxer, formerly a holder of the British Boxing Board of Control (BBBofC) Southern Area heavyweight title belt.
Three successive wins followed before Kenna faced Audley Harrison's victim, Mark Krence, who at the time was highly rated and tipped as a future star.
Llewellyn had a 30–5 record including a victory over Michael Sprott and a defeat to world title challenger Jameel McCline.
Kenna has lost seven consecutive fights, the first of which came when he was out-pointed by undefeated Moldovan-born Israeli Roman Greenberg (27-0) over eight rounds in London on 31 October 2007.
On 11 April 2008, Kenna appeared in the "Prizefighter" competition on Sky Sports, but was knocked out by Paul Butlin in 2nd round of the quarter final.