La Vallée-de-la-Gatineau (The Valley of the Gatineau) is a regional county municipality in the Outaouais region of western Quebec, Canada. The seat is in Gracefield. It is named for its location straddling the Gatineau River north of Low. It was incorporated on January 1, 1983.
It consists of two cities, fifteen municipalities, and five unorganized territories. The area also has two Algonquin communities, Kitigan Zibi (south of Maniwaki) and Rapid Lake in the heart of the La Vérendrye Wildlife Reserve.
The territory of the Gatineau Valley is bordered to the south by the Les Collines-de-l'Outaouais Regional County Municipality and to the east by the Antoine-Labelle Regional County Municipality. Numerous lakes abound in area, including everything from the small Lac des Pins  to 31 Mile Lake.
There are 22 subdivisions within the RCM:
Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border: