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The name Qazvin is derived from Caspian, the name of a group of people who lived in the southern shores of the Caspian Sea in ancient times.
| Provinces of Iran | |
|---|---|
| Ardabil | Bushehr | Chahar Mahaal and Bakhtiari | East Azarbaijan | Esfahan | Fars | Guilan | Golestan | Hamadan | Hormozgan | Ilam | Kerman | Kermanshah | Khorasan | Khuzestan | Kohkiluyeh and Buyer Ahmad | Kurdistan | Lorestan | Markazi | Mazandaran | Qazvin | Qom | Semnan | Sistan and Baluchistan | Tehran | West Azarbaijan | Yazd | Zanjan | |