Fort Chambly
| Fort Chambly | |
|---|---|
| Site information | |
| Type | Fort | 
| Controlled by | New France; Great Britain; Canada | 
| Location | |
| Coordinates | 45°26′58″N 73°16′37″W / 45.44944°N 73.27694°W | 
| Site history | |
| Built | 1665 | 
| In use | 1675–1776 | 
| Battles/wars | Iroquois Wars — Seven Years' War — Invasion of Canada Campaign — American Revolution | 
| Official name | Fort Chambly National Historic Site of Canada | 
| Designated | 1920 | 
Fort Chambly is a historic fort in La Vallée-du-Richelieu Regional County Municipality, Quebec. It is designated as a National Historic Site of Canada. Fort Chambly was formerly known as Fort St. Louis. It was part of a series of five fortifications built along the Richelieu River to protect travellers on the river from the Iroquois. The region is informally known as la Vallée-des-Forts.