John Mackenzie (21 September 1876 – 9 December 1949) was a Scottish sailor who competed for the Royal Clyde Yacht Club at the 1908 Summer Olympics.
John Mackenzie, born on 21 September 1876 and died on 9 December 1949, was a Scottish sailor from the Royal Clyde Yacht Club who represented Scotland at the 1908 Olympic Games, showcasing his experience with sailing competitions.