{{Infobox border
| name =
| image =
| alt =
| caption = Canadian regions sharing a land or water border with the USA{{legend|#22b14c|Land border}}{{legend|#00b7ef|Water border}}
| territory1 ={{CAN}}
| territory2 ={{USA}}
| length =8,891 kilometres (5,525 mi)
| enclaves =
| established = September 3, 1783
| establishedreason = Signing of the [[Treaty of Paris (1783)|Treaty of Paris]] at the end of the [[American War of Independence]]
| current = April 11, 1908
| currentreason = [[Treaty of 1908]] enacted to survey and delimit the boundary through the St. Lawrence River and Great Lakes
| disestablished =
| disestablishedreason =
| treaties = [[Treaty of Paris (1783)|Treaty of Paris]], [[Jay Treaty]], [[Treaty of 1818]], [[Webster–Ashburton Treaty]], [[Oregon Treaty]]
| notes = [[List of areas disputed by Canada and the United States|Current disputes]]
}}