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- Rob Machado (1973- ) (USA) Won Pipeline Masters and U.S. Open of Surfing
- James MacLaren (USA) Florida longboarding iconoclast. Author of Learn To Surf, Lyons Press 1997.
- Cheyne Magnusson (c. 1984), US
- Malia Manuel (1993- ) (Haw) 2008 US Open Champion (youngest ever)
- Bobby Martinez (1986- ) (USA) 2006 Rookie of the Year
- Clay Marzo (1989- ) (USA) Three NSSA National surfing titles, a nomination for Maneuver of the Year at the 2007 SURFER Magazine Poll and Video Awards
- Pauline Menczer (1970- ) (Aus) 1988 amateur world champion, 1993 world champion
- Jessi Miley-Dyer (1986- ) (Aus)
- Wayne Miyata (1942-2005) (USA) California and Hawaii, "going tubular" in Endless Summer, famous color glosser
- Carissa Moore (1992- ) (Haw) 2011 ASP Women's World Champion, youngest female ever to win
- Sofía Mulánovich (1983- ) (Peru) First South American to win the World Title in 2004
- Mickey Muñoz (1937- ) (USA) Early surfing pioneer, also famous as a surfboard shaper
Read more about this topic: List Of Surfers