Princess Sultanum
| Mahinbanu Sultan | |
|---|---|
 Likely depiction of Princess Sultanum, in The Princely Lovers, attributable to Mirza Ali, Qazvin, circa 1544. | |
| Born | 1519 Tabriz, Safavid Iran |
| Died | 1562 (aged 42–43) Qazvin, Safavid Iran |
| Dynasty | Safavid |
| Father | Ismail I |
| Mother | Tajlu Khanum |
| Religion | Shia Islam |
Mahinbanu Sultan, better known as Princess Sultanum, or Shahzada Sultanum (Persian: مهینبانو سلطان; 1519–1562) was a Safavid princess of Iran, and the daughter of Shah Ismail I (r. 1501–1524) and Tajlu Khanum. She was the youngest sister of Tahmasp I. She had a big influence on the reign of her brother, and acted as his political adviser. She was one of the prominent and highly influential figures of the Safavid era.