|Men's canoe sprint|
|Gold medal – first place||1995 Duisburg||K-4 200 m|
|Gold medal – first place||1998 Szeged||K-4 200 m|
|Gold medal – first place||1999 Milan||K-4 200 m|
|Gold medal – first place||2001 Poznań||K-4 200 m|
|Bronze medal – third place||1990 Poznań||K-4 500 m|
Gyula Kajner is a Hungarian sprint canoer who competed from the early 1990s to the early 2000s. He won five medals at the ICF Canoe Sprint World Championships with four golds (K-4 200 m: 1995, 1998, 1999, 2001) and a bronze (K-4 500 m: 1990).
- ICF medalists for Olympic and World Championships - Part 1: flatwater (now sprint): 1936-2007.
- ICF medalists for Olympic and World Championships - Part 2: rest of flatwater (now sprint) and remaining canoeing disciplines: 1936-2007.
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