Mark William Stockwell (born 5 July 1963) is an Australian former competition swimmer and three-time Olympic medallist.
Stockwell is a Queensland native who specialised in freestyle sprint events, and had a successful international swimming career during the mid-1980s including the Olympics, Pan Pacific Championships, and Commonwealth Games.
Following his retirement from competitive swimming, he has become a successful business executive and has been active in the administration of national sports organisations in Australia.