The Battle of the Thames , also known as the Battle of Moraviantown, was an American victory in the War of 1812 against Tecumseh's Confederacy and their British allies. It took place on October 5, 1813, in Upper Canada, near Chatham. The British lost control of Southwestern Ontario as a result of the battle; Tecumseh was killed, and his confederacy largely fell apart.

British troops under Major General Henry Procter had occupied Detroit until the United States Navy gained control of Lake Erie, cutting them off from their supplies. Procter was forced to retreat north up the Thames River to Moraviantown, followed by the tribal confederacy under Shawnee leader Tecumseh who were his allies. American infantry and cavalry under Major General William Henry Harrison drove off the British and then defeated the Indigenous peoples, who were demoralized by the death of Tecumseh in action. American control was re-established in the Detroit area, the tribal confederacy collapsed, and Procter was court-martialled for his poor leadership.