Jack Lake may refer to:
People Jack Lake (footballer), an Australian rules footballer
Places Jack Lake, Simcoe County, Ontario, community in the municipality of Clearview, Ontario Jack Lake (Halifax), lake in Halifax, Nova Scotia Jack Lake (Nipissing District), lake in Nipissing District, Ontario, within Algonquin Provincial Park Jack Lake (Peterborough County), lake in the Kawartha Lakes in Peterborough County, Ontario Jack Lake, Peterborough County, dispersed rural community, on the northwest shore of Jack Lake (Peterborough County), in Peterborough County, Ontario