Hiệp ước Preobrazhenskoye

The Treaty of Preobrazhenskoye (or the Treaty of Preobrazhenskoe) was an alliance agreement between the Russian Empire under Tsar Peter the Great and Poland–Saxony under King Augustus II.

It was negotiated by Johann Patkul and signed on 22 November 1699 in Preobrazhenskoye (now a part of Moscow), a favoured residence of the tsar. It followed an informal meeting of Peter and Augustus at Rava-Ruska in August 1698. The treaty called for the partition of the Swedish Empire among Denmark-Norway, Russia, Saxony and the Polish–Lithuanian Commonwealth. Following the treaty, the Great Northern War began.