German whitewater canoeist Jochen Lettmann participated in the 1992 Barcelona Olympics, when canoe slalom became a permanent fixture in the Olympic program after its first appearance in 1972. He won the bronze medal in the kayak singles but, at Atlanta in 1996, he finished a disappointing eighth when his team-mates Oliver Fix and Thomas Becker won the gold and bronze medals respectively. In 1995 and 1997, Lettmann won gold and bronze with the German teams at the World Championships. Also, at the 1996 Europeans, he won a team gold and an individual bronze.
Lettmann won national titles in 1991, 1993-95, and 1997. His father was World Champion in 1963. After his retirement, Lettmann took over his parents’ boatbuilding business.