Shubenacadie Grand Lake is a large, deep lake located near Enfield in Nova Scotia, spanning both East Hants Municipality and Halifax Regional Municipality. It covers approximately 1,841 hectares (4,550 acres) and reaches a maximum depth of 45 metres (148 feet), sitting at a surface elevation of 13 metres. The lake contains three islands and is the seventh and largest lake in the Shubenacadie Canal system, draining northeast into the Shubenacadie River. In Mi'kmaq it is known as Kji-qospem, meaning "grand lake," reflecting its long history as part of a traditional travel route connecting Halifax Harbour to the Bay of Fundy.

Wind is the primary hazard on this lake. Its large open surface makes it frequently too rough for paddling, and both the Shubenacadie Canal Commission and Paddling Magazine note that high winds are a persistent challenge. Paddlers are advised to stick to morning hours when winds tend to be calmer. Given the lake's size, conditions can deteriorate quickly, and caution is warranted for those in canoes or smaller kayaks.

Access points include Lock 5 Park at the southern end of the lake, which features a boat launch suitable for larger vessels as well as a dock for small watercraft. Lock 5 itself is the only fully restored lock on the Shubenacadie Canal Waterway and is a provincially recognized historic site. Laurie Provincial Park, located on the eastern shore, offers overnight campsites and serves as a useful staging point; from there, paddlers can continue approximately 6.5 kilometres north to Sandy Cove near Oakfield Provincial Park, where the lake transitions into the Shubenacadie River. Oakfield Provincial Park is also situated along the eastern shore.

The lake supports fishing for smallmouth bass, striped bass, landlocked salmon, chain pickerel, and speckled trout. Eagles are commonly sighted along the broader canal waterway. The lake has been subject to blue-green algae advisories during warm seasons due to harmful algal blooms, and dogs have died in Atlantic Canada after consuming cyanobacteria-contaminated water from affected lakes. Paddlers and pet owners should check for active advisories before visiting, particularly in summer. The lake is also used by motorized watercraft including jet skis and water skiers, which adds to the considerations for paddlers sharing the water.