Dennis Norman Heussner (born 20 October 1943 in Albury, New South Wales) is an Australian sprint canoeist who competed in the early to mid-1970s. Competing in two Summer Olympics, he was eliminated in the semifinals of the K-4 1000 m event in both 1972 and 1976. Dennis was for a period of time the leading gold medalist at the Australian Surf Lifesaving titles. He finished his career as the most successful long board paddler, and a leading malibu, malibu relay, ski, double ski and ski relay champion.