The Seven Parthian clans or Seven Houses were seven feudal aristocracies of Parthian origin, who were allied with the Sasanian court.
Only two of the seven - the House of Suren and the House of Karen - are actually attested in sources date-able to the Parthian period.
During Sasanian times, the seven feudal houses played a significant role at the Sasanian court. Bahram Chobin, a famed military commander of Hormizd IV (r. 579–590), was from the House of Mihran.
The seven houses with their respective main fiefs and ruling-family seats were: