Tehran is the capital and largest city of Iran and also the largest city in Tehran Province. It also serves as the capital of the province, county and the Central District. With a population of around 9.4 million in the city, and 16.8 million in the metropolitan area, Tehran is the most populous city in Iran and Western Asia, the second-largest metropolitan area in the Middle East after Cairo, and the 24th most populous metropolitan area in the world. Greater Tehran includes several municipalities, including "New Town of Andisheh", "Islam Shahr", "Shahreh Qods", "Shahryar", "Pakdasht" and "Shamiran".

तेहरान ईरान ईरान के तेहरान प्रान्त का एक शहर और ईरान की राजधानी है। इस शहर की जनसंख्या वर्ष २००६ की जनगणना के अनुसार ७,७९७,५२० है।