| Birth Date: | 10 April 1929 |
| Birth Place: | Split, Littoral Banovina, Kingdom of Yugoslavia |
| Death Place: | Split, Croatia |
| Sport: | Rowing |
| Club: | HVK Gusar, Split |
| Show-Medals: | yes |
Duje Bonačić (10 April 1929 – 24 January 2020) was a Croatian rower who won a gold medal representing Yugoslavia in the coxless four event at the 1952 Summer Olympics.[1]
Bonačić was born in Split to a Croatian father and Slovenian mother. He had an elder brother Vojko and a sister Nevenka. He graduated in natural sciences in Zagreb, and took up rowing to build muscles, as he weighed only 56 kg with a height of 183 cm at the time. After retiring from competitions he worked as a professor of geography, meteorology and oceanography at maritime schools and also served as a coach and referee in rowing and sailing.[2]
After the death of Željko Čajkovski on 11 November 2016, he became the oldest Croatian Olympic medal winner.[3] Bonačić died on 24 January 2020, at the age of 90 following a short illness.[4]