Zlatko Sinobad was born in 1923 in Benkovac. When he was still a young boy, his father - who was headmaster of the high school in Benkovac - was transferred to a lower position in Knin as a result of his advocacy of federalism in the then Kingdom of Yugoslavia and for being deem politically unsuitable. His father died in Knin shortly after, and the family was left unprovided for. His mother, with three children, moved to Split, where Zlatko Sinobad continued his education. Whilst still in high school he joined the Young Communist League of Yugoslavia and participated in many of their actions. He soon joined the Partisans and was active in the area of Central Dalmatia. After the War he moved to Zagreb, where he worked and studied law part-time. He worked as the director of Radio Zagreb, and later as the director of the Centre for Information and Culture at the Federal Secretariat for Foreign Affairs. Today he is retired and lives in Zagreb.