František Kadaňka (born 8 October 1944 in Dolní Kounice) is a former Czechoslovak slalom canoeist who competed in the 1960s and 1970s. He won five medals at the ICF Canoe Slalom World Championships with three silvers (C-1 team: 1969; C-2 team: 1973, 1975) and two bronzes (C-2: 1975, C-2 team: 1971).