Old Fort Erie, also known as Fort Erie, or the Fort Erie National Historic Site of Canada, was the first British fort to be constructed as part of a network developed after the Seven Years' War was concluded by the Treaty of Paris (1763), at which time France ceded its territories east of the Mississippi River to Great Britain. The installation is located on the southern edge of what is now the Town of Fort Erie, Ontario, directly across the Niagara River from Buffalo, New York, United States.

Fort Erie is a town on the Niagara River in Niagara Region, Ontario, Canada. It is directly across the river from Buffalo, New York, and is the site of Old Fort Erie which played a prominent role in the War of 1812.