Heydar Ghiai (or in full Heydar Ghiai-Chamlou), an Iranian architect, was born on 23 October 1922 in Tehran, Iran. He studied architecture at the École des Beaux-Arts and was graduated in 1952.
Ghiai was known as a pioneer of modern architecture in Iran. He designed the Senate House of Iran in 1955, which later served as the parliament building, Majles, of Islamic Republic of Iran from 1979 to 2004. Since 2005 it serves as seat to the Assembly of Experts. The dome of the building was the most technically challenging aspect of the project.
He also designed the Royal Tehran Hilton, cinemas, train stations, civic and government buildings, and some state of the art hospitals. In France, he designed the building of Avicenne Foundation, amongst many others.
In 1968, Ghiai was nominated architect to the imperial court of Iran and commissioned the vast project of a complex of imperial palaces situated in Farah Abad, Mazandaran, Iran. As a Professor of Architecture at the University of Tehran, he taught several generations of architects.
Heydar Ghiai was settled in France later in his life, where he died in 6 September 1985 in Cap d'Antibes.