Bolton Lake is a lake in the Mackenzie River drainage basin in north-western Saskatchewan, Canada. It is about 2.7 km long and 1.3 km wide, and lies at an elevation of 487 m. The primary outflow is an unnamed creek to Meanwell Lake, then an unnamed creek into the Mirror River, and then via Clearwater River, Athabasca River, Slave River, and Mackenzie River into the Arctic Ocean. Access to the lake is either by air or a winter road. The Bolton Lake Airstrip is just north-west of the lake. It has a 3,000-foot grass runway and a helipad. On the northern shore of the lake is the Bolton Lake Wilderness Retreat. It has a lodge, cabins, and a commercial kitchen. Outdoors, there is black bear hunting, ATV trails, and hiking trails.