Kai Walter (born 1973) is a German slalom canoeist who competed from the late 1990s to the early 2000s.
He won a silver medal in the C2 team event at the 2002 ICF Canoe Slalom World Championships in Bourg St.-Maurice. He also won a bronze medal in the same event at the 2002 European Championships in Bratislava.
His partner throughout his international career was Frank Henze.