Bonnet Lake Barrens Wilderness Area is a near-coastal wilderness area in Guysborough County, Nova Scotia, Canada, adjacent to Cole Harbour and Upper Whitehead. It is governed by Environment and Climate Change of Nova Scotia. The wilderness area is measured from Halifax, and from Truro.
Bonnet Lake Barrens Wilderness Area is approximately in area. It has expanded in March 2011, and another in 2025. The wilderness area is dominated by rugged, wind-swept granite barrens, semi-barrens and coastal spruce-fir forests. It also has ecologically sensitive raised bogs, rare plants, and an array of lakes and waterways, including ponds, still-waters, brooks and streams. The wilderness area contains unique, crescent shaped beaches, originally formed from glacial debris.
Bonnet Lake Barrens Wilderness Area can be accessed by Marine Drive in Nova Scotia Route 316. It can be also accessed via a cycling spur route, starting from Larry's River to Cape Breton.