Keshavarz Sadr was the son of Mohammad Ali Keshavarz Sadr, Prime Minister Mossadegh's deputy and a leader of the National Front (1960-1963). He obtained his BA in 1963 in Social Sciences and in 1967 in Anthropology from the University of Tehran. He became active in politics at a young age as a member of the Tudeh Party, but after the August 28 Coup, along with Bijan Jazani and some other leftist students from the University of Tehran, he joined the national movement and enlisted at the Second National Front. It was at this point that he formed a close friendship with Abolhassan Banisadr, whom he would stay in touch with for the rest of his life. Through his continued political engagement he became a member of the National Front's Executive Council.