Mahmoud Hessabi (or Hessaby, محمود حسابی, February 23, 1903 – September 3, 1992) was an Iranian nuclear physicist and senator. He was the minister of education of Pahlavi Iran in the cabinet of Prime Minister Mohammad Mosaddegh from 1951 to 1952.
Hessabi was born in Tehran to the family of Abbas and Goharshad Hessabi. His family's hometown is Tafresh, Markazi province, Iran. His family moved to Beirut in 1907 when his father was appointed consul at the Iranian embassy. There Hessabi attended primary school. He was still in secondary school when World War I started prompting the closure of his school; Hessabi continued his studies at home and in 1922, he earned a degree in road engineering from the American University of Beirut. After briefly working for the Ministry of Roads, Beirut, Hessabi travelled to Paris for further education, he was awarded a degree in electrical engineering at the École Superieure d'Electricité and later a doctorate degree in 1927. In Paris