Coulon is a surname. Notable people with the surname include:
George David Coulon (1822–1904), American painter
Georges Coulon (1838–1912), Former Vice President of the French Council of State
Jean-Michel Coulon (1920–2014), French painter
Jocelyn Coulon (born 1957), Quebec author, researcher and former federal election candidate
Johnny Coulon (1889–1973), American boxer