Nasrollah Entezam comes from an old - respected Iranian family. His mother was a choir Schid Khanum Ghaffari, a granddaughter of Mirza Ali Khan Amin al Dowleh. Nasrollah first visited the German Technical School in Tehran, the Dar -ol Fonun and studied at the School of Political Sciences in Tehran later.
After completing his studies, he entered the service of the Iranian Foreign Ministry. His first foreign assignment took him to the Iranian Embassy in Paris. After some time he was transferred to the Iranian Embassy to Warsaw.
In 1931 he returned to Iran and worked in the Foreign Ministry. In his work area fell by international treaties. For this reason, he was appointed as secretary to the Iranian delegation, which was responsible for the renegotiation of the concession for the Anglo-Iranian Oil Company from 1932. In this context, he accompanied Ali -Akbar Davar and Hossein Ala to Geneva to the League of Nations. From 1933 Entenzam chargé was the Iranian Embassy in Bern and head of the Iranian delegation to the League of Nations in Geneva.
In 1939 Entezam back as a department manager in Iran, but was appointed in 1940 to the Chief of Protocol to the Iranian court. With the arrival of the British and Soviet troops during the Anglo - Soviet invasion of Iran, the then following abdication Reza Shah in favor of his son Mohammad Reza Pahlavi Entezam took over the management of the farm until the appointment of Mohammad Ali Foroughi.
1943 he was appointed Minister of Health in the Cabinet of Prime Minister Ahmad Qavam. In the subsequent Cabinet of Ali Soheili Entezam first took over the Ministry of Post, Telegraph and Telephone, and later the Ministry of Transport. He headed the Department of Transportation until his appointment as Foreign Minister by Prime Minister Morteza Bayat Gholi. Already in March 1945 Entezam resigned as foreign minister to travel with the Iranian delegation to San Francisco for the inaugural meeting of the United Nations. From 1947 he was the permanent representative and ambassador of his country at the UN. Entezam was the fifth President of the UN General Assembly ( 1950/1951 ).
1953 of Prime Minister Mohammad Mossadegh Entezam was recalled as ambassador to the United Nations, but was then immediately after the overthrow of Mossadegh as Iran's ambassador to Washington DC posted. 1958 Entezam was sent as ambassador to Paris. In 1962 he returned to Iran to be a minister without portfolio in the cabinet of Prime Minister Asadollah Alam.
Nasrollah Entezam was first a member of the party " New Iran " (Iran Novin ). On May 2, 1975 Entezam founding chairman and later vice chairman of Rastachiz party.
While the start of the Islamic Revolution Entezam returned from an overseas trip from Geneva to Tehran back. There he was immediately arrested, spent the Eving prison and abused hard for a long time. His cellmate, the former Minister of Health Dr. Scheichol Eslam demanded his immediate transfer to a hospital. Entezam was released to die in his sister Farok Lagha Entezam - Saltaneh house just a few days later. The House of Nasrollah Entezam that is full of friendly party favors diplomats and memorabilia of his time which he had spent in the service of his country, was looted and completely robbed.