Omerbašić was born in Ustikolina, near Foča, Yugoslavia, presently in Bosnia and Herzegovina. He finished elementary school in his birthplace and went to Sarajevo where he entered high school, the Gazi Husrev-beg Madrasa which he attended from 1956 until 1964. After he finished high school education, he worked as an imam in Rudo, and then he returned to Ustikolina also as imam.