Jiří Vokněr (12 May 1931 – 29 May 2018) is a Czechoslovak sprint canoer who competed in the mid to late 1950s. He won three medals at the ICF Canoe Sprint World Championships with one gold (1954: C-1 10000 m) and two silvers (1958: C-1 1000 m, C-1 10000 m).
