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- Margo Oberg (1953- ) (Haw) Three-time world champion 1977, 1980 & 1981
- Jamie O'Brien (1983- ) (Haw)
- Mark Occhilupo (1966- ) (Aus) 1999 world champion
- Phyllis O'Donnell (1937- ) (Aus) In 1964 won the inaugural women's World Championship Surfing Title at Manly Beach
- Jack O'Neill (1923- ) Surfer and inventor of the modern wetsuit
Read more about this topic: List Of Surfers