| Medal record | ||
|---|---|---|
| Men's canoe sprint | ||
| Olympic Games | ||
| Silver | 1956 Melbourne | C-1 1000 m |
| World Championships | ||
| Silver | 1954 Mâcon | C-1 1000 m |
| Bronze | 1954 Mâcon | C-1 10000 m |
István Hernek (born 23 April 1935) is a Hungarian sprint canoer who competed in the mid 1950s. At the 1956 Summer Olympics in Melbourne, he won a silver medal in the C-1 1000 m event.
Hernek also won two medals at the 1954 ICF Canoe Sprint World Championships with a silver in the C-1 1000 m and a bronze in the C-1 10000 m events.