The War of Stettin against Stargard over maritime trade (known as the Wheat War) was an armed conflict between Stettin and Stargard over primacy in maritime trade, lasting from 1454 to 1464, with roots dating back to the mid-14th century.
The war was caused by mutual disregard for de facto conflicting privileges. Stettin had the staple right (all ships leaving the duchy were required to dock at the port of Stettin), while Stargard possessed the right of free and tariff-free navigation to the Baltic Sea. During the conflict, there were numerous skirmishes between the adversaries, with the most tragic being the Stargard attack on Stettin on 22 February 1460, when 6 guards of the Tariff Bridge were killed, and several dozen people were taken captive. The war ended as a result of mediation by Hanseatic cities in November 1464.