Mark Nichols, ONL (born January 1, 1980) is a Canadian curler from St. John's, Newfoundland and Labrador. He currently plays third for the Brad Gushue rink. Nichols is a former Olympic champion curler, having played third for Team Canada at the 2006 Winter Olympics where the team won a gold medal. He also won a World championship with Gushue in 2017.