Lac Caribou - 3 is a backcountry campsite situated on Lac du Caribou within La Mauricie National Park in Quebec, Canada.

It is one of 12 campsites in the Lac du Caribou sector and falls within the grouping of sites 2 through 4, for which Parks Canada provides a dedicated sector map.

Access to the lake is by canoe, and campers arriving via the Saint-Gérard entrance must first register at either the Saint-Mathieu or Saint-Jean-des-Piles entrance before proceeding to their site.

The area offers classic backcountry canoe-camping in the Canadian Shield landscape of La Mauricie, with reservations handled through the park's backcountry reservation system.