The Peace of Amasya (Persian: پیمان آماسیه; Turkish: Amasya Antlaşması) was a treaty agreed to on May 29, 1555 between Shah Tahmasp of Safavid Iran and Sultan Suleiman the Magnificent of the Ottoman Empire at the city of Amasya, following the Ottoman–Safavid War of 1532–1555.
The treaty defined the border between Iran and the Ottoman Empire and was followed by twenty years of peace. By this treaty, Armenia and Georgia were divided equally between the two, with Western Armenia, western Kurdistan, and western Georgia (incl. western Samtskhe) falling in Turkish hands while Eastern Armenia, eastern Kurdistan, and eastern Georgia (incl. eastern Samtskhe) stayed in Iranian hands. The Ottoman Empire obtained most of Iraq, including Baghdad, which gave them access to the Persian Gulf, while the Persians retained their former capital Tabriz and all their other northwestern territories in the Caucasus and as they were prior to the wars, such as Dagestan and all of what is now Azerbaijan. The frontier thus established ran across the mountains dividing eastern and western Georgia (under native vassal princes), through Armenia, and via the western slopes of the Zagros down to the Persian Gulf.