Zaharije Ostojić (; 1907 – April 1945) was the chief of the operational, organisational and intelligence branches of the Chetnik Supreme Command led by Draža Mihailović in Yugoslavia during World War II. Montenegrin by birth, Ostojić was a major in the Yugoslav Royal Air Force prior to the Axis invasion of Yugoslavia, and was involved in the coup that deposed Prince Paul of Yugoslavia on 27 March 1941. After the coup, he escorted Prince Paul to exile in Greece, and was in Cairo at the time of the invasion in April. In September 1941, he was landed on the Italian-occupied Montenegrin coast along with a British Special Operations Executive (SOE) liaison officer and two companions. He escorted the SOE officer to the Territory of the Military Commander in Serbia and introduced him to the Yugos