Kerry Dennis O'Brien (17 April 1946 – 13 December 2025) was an Australian runner. Competing in the steeplechase he won a silver medal at the 1966 British Empire and Commonwealth Games and finished fourth at the 1968 Summer Olympics. He held the world record in this event between 1970 and 1972. At the 1970 Commonwealth Games, O'Brien fell at the penultimate water-jump, while leading, and failed to finish the race. He also fell during the 1972 Olympics. He retired in 1973 having won nine Australian titles in the steeplechase, 5000 m and cross-country running. O'Brien died on 13 December 2025, at the age of 79.
International competitions 1966British Empire and Commonwealth GamesKingston, Jamaica 8th1 mile 2nd3000 m steeplechase1968Olympic GamesMexico City, Mexico 4th3000 m steeplechase1969Pacific Conference GamesTokyo, Japan 1st3000 m steeplechase1970British Commonwealth GamesEdinburgh, Scotland 8th10,000 m DNF3000 m steeplechase1972Olympic GamesMunich, West Germany DNF3000 m steeplechase1973Pacific Conference GamesToronto, Canada 1st3000 m steeplechase
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