Waverley–Salmon River Long Lake Wilderness Area, Nature reserve in Nova Scotia, Canada.

Waverley-Salmon River Long Lake Wilderness Area is an 8,710-hectare protected area in Nova Scotia featuring rocky granite terrain, interconnected lakes, and river systems bordered by mixed coniferous forests. The landscape shifts between dense woods and open wetlands, creating varied habitats throughout the reserve.

Nova Scotia established the Waverley Game Sanctuary in 1929 to curb overhunting and overtrapping, making it the third-oldest game sanctuary in the province after Tobeatic (1927) and Liscomb (1928). Three warden's cabins were built at Lake Major, Three Mile Lake and Miller Lake to enforce the rules. In 1991 the sanctuary was re-designated a wilderness area and hunting was allowed again; the Miller Lake cabin is now used by Scouts Canada and the Three Mile Lake cabin is left open for visitors.

Three warden's cabins once stood at the north ends of Lake Major and Three Mile Lake and on an island in Miller Lake. Since the 1991 redesignation the Miller Lake cabin has been used by Scouts Canada, and the Three Mile Lake cabin is left open for visitors; the Lake Major cabin burned down.

The southern section, including West Lake, Granite Lake and the Salmon River, is reached via the Crowbar Lake Hiking Trail. Most of the remainder is accessed by canoe and portage, with starting points on Lake Major, Aerotech Drive or Salmon River Road. The Three Mile Lake warden's cabin is left open for visitors.

The bedrock changes from granite in the south to quartzite and slate in the north, where the terrain is much less hilly. Jack Pine, uncommon in Nova Scotia, grows in abundance on the granite hills, some of which rise over 100 metres.