The Treaty of Nöteborg, also known as the Treaty of Oreshek, is a conventional name for the peace treaty signed at Oreshek on 12 August 1323. It was the first settlement between Sweden and the Novgorod Republic regulating their border mostly in the area that is also known as Finland today. Three years later, Novgorod signed the Treaty of Novgorod with the Norwegians.

The Swedish–Novgorodian Wars were a series of conflicts in the 12th and 13th centuries between the Novgorod Republic and medieval Sweden over control of the Gulf of Finland, an area vital to the Hanseatic League and part of the trade route from the Varangians to the Greeks. The Swedish attacks against Orthodox Russians had religious overtones, but before the 14th century there is no knowledge of official crusade bulls issued by the pope.