Richard Dunn (born 19 January 1945) is an English former heavyweight boxer who was the British (1975–76), European (1976) and Commonwealth (1975–76) Champion. He unsuccessfully challenged Muhammad Ali for the world heavyweight title in 1976.

On 24 May 1976 Dunn was given the chance of fighting for the WBC and WBA titles against the American champion Muhammad Ali at the Olympic Hall in Munich, Germany. Dunn, despite fighting in a spirited fashion, found himself seriously outmatched by Ali in power and technique, being knocked down several times by the American champion, who clearly realized the un-equalness of the competition in his favour and began to land carefully timed and weighted punches to stun Dunn but minimize the chance of physical injury to him as the fight went on.

At the 2:05 minute mark in the fifth round Dunn went to the canvas for the final time and the referee stopped the match in a technical knock-out, with Ali playing to the crowd comically windmilling a punch that was coming that would be overwhelming, and to encourage the referee to end the match as having run its course.

Dunn lost his next fight in London five months later with Joe Bugner, surrendering all his titles in a first-round knock-out. His final fight was a fifth-round knock-out defeat to the South African boxer Kallie Knoetze at the Ellis Park Tennis Stadium in Johannesburg on 10 September 1977, after which Dunn retired from the sport.

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