Gary Mawer (born December 12, 1969) is an Irish sprint canoer who has competed from the mid 1990s to the early 2000s (decade). At the 1996 Summer Olympics in Atlanta, he was eliminated in the repechages of both the K-2 500 m and the K-2 1000 m event. Four years later, Mawer was eliminated in the heats of the K-1 500 m event and the semifinals of the K-1 1000 m event.