Charles Fenton Mercer Spotswood Quinby (October 6, 1899 – January 4, 1988) was an American competition swimmer who represented the United States at the 1920 Summer Olympics in Antwerp, Belgium. Quinby competed in the qualifying heats of the men's 400-meter breaststroke; he finished fourth in his heat but did not advance.
- ^ a b Sports-Reference.com, Olympic Sports, Athletes, Charles Quinby. Retrieved December 2, 2012.
- ^ Sports-Reference.com, Olympic Sports, Swimming at the 1920 Antwerpen Summer Games, Men's 400 metres Breaststroke. Retrieved December 2, 2012.