| Conflict: | Siege of Ganja |
| Partof: | the Ottoman–Safavid War of 1603–1618 |
| Date: | 1606 |
| Place: | Ganja |
| Result: | Safavid victory |
| Combatant1: | Safavid Empire |
| Combatant2: | Ottoman Empire |
| Territory: | Recapture of the city |
The siege of Ganja took place in 1606 during the Ottoman–Safavid War of 1603–1618. The Safavids had lost the city to the Ottomans by the Treaty of Constantinople of 1590. Three months after the victorious Battle of Sufiyan (1605), Safavid king (shah) Abbas I of Persia (1588–1629) invested Ganja, and reconquered it after a six-month siege. After Ganja was recaptured, Abbas I and his men proceeded to Tiflis (Tbilisi), retaking control of the city in the same year.