The Treaty of Turkmenchay (Persian: عهدنامه ترکمنچای; Russian: Туркманчайский договор) was an agreement between Qajar Iran and the Russian Empire, which concluded the Russo-Persian War (1826–28). It was second of the series of treaties (the first being the Treaty of Gulistan and the last, the Akhal Treaty) signed between Qajar Iran and Imperial Russia that forced Persia to cede or recognize Russian influence over the territories that formerly were part of Iran.[1][2]