| Janusz Gronowski | |
| Nationality: | Polish |
| Sport: | Athletics |
| Event: | Pole vault |
| Birth Date: | 2 January 1935 |
| Birth Place: | Korzec, Poland (modern-day Korets, Ukraine) |
Janusz Ignacy Gronowski (2 January 1935 – 14 June 2024) was a Polish athlete. He competed in the men's pole vault at the 1960 Summer Olympics.[1] Gronowski died on 14 June 2024, at the age of 89.[2]