The Treaty of Finkenstein was concluded between France and Persia in the Castle of Finkenstein , (East Prussia) on May 4, 1807.

Napoleon I guaranteed the integrity of Persia, recognized part of Georgia and other eastern Transcaucasia as the Shah's possession, and was to make all possible efforts for restoring those territories to him. Napoleon also promised to furnish the Shah with arms, officers and workmen. France on his side required the Shah to declare war against Britain, to expel all Britons from Persia, and to come to an understanding with the Afghans with a view to a joint Franco-Perso-Afghan invasion of India.

Despite the Treaty of Finkenstein, France failed to win a diplomatic war around Iran and none of the terms of the treaty was realized. On March 12, 1809, Britain signed a treaty with Persia forcing the French out of that country.