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. 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.