Lac Baker is a Canadian lake covering approximately 6 square kilometres in northwestern New Brunswick, situated on the provincial border with Quebec. The lake has a distinctive shape, with its northern portion extending roughly 0.8 kilometres to the northwest into Quebec. A central island runs approximately 1.2 kilometres in length and up to 0.3 kilometres in width, and supports around fifty chalets. The lake is fed primarily by Kitchen Creek arriving from the west out of Quebec, and drains southward through Baker Brook into the Saint John River at the community of Baker Brook. A road encircles much of the lake, serving the cottages arranged around its shoreline.

The surrounding landscape is characterized by mountains and offers views described as scenic, particularly at sunrise and sunset. The area is noted for fishing as well as general water recreation. The community of Lac Baker sits along the lake's shores, and the Tourism New Brunswick listing notes the presence of two lakes in the immediate area.

For paddlers, the primary access point and hub of amenities is Camping Plein Air Lac Baker (also listed as Rest-o-lac Campground), located at 510 De l'Église Road in Lac Baker. This facility offers a boat launch, kayak rentals, paddleboard rentals, and canoe rentals, making it a practical base for those without their own equipment. The campground operates across multiple seasons and is accessible by car, boat, and snowmobile, suggesting the area sees activity beyond the summer months. On-site amenities include a restaurant, bar, and outdoor terrace, which can serve paddlers looking for a meal before or after time on the water.

The lake's relatively modest size of 6 square kilometres and the presence of a central island make it well suited to recreational flatwater paddling, with the island providing a natural destination for day trips. The road encircling the lake and the concentration of cottages along the shoreline indicate a developed recreational environment rather than a remote wilderness setting.