Peters Lake () is a lake in Peters Township, a geographic township, in the Unorganized North Part of Sudbury District in northeastern Ontario, Canada. It is in the Lake Superior drainage basin.
Peters Lake has an area of , lies at an elevation of , and is within The Shoals Provincial Park. There are three inflows, all unnamed, at the south of the lake. The primary outflow, at the north, is an unnamed stream that leads north to Windermere Lake. Windermere Lake flows via the Windermere River, Shikwamkwa Lake, the Shikwamkwa River, Whitefish Lake, and the Michipicoten River to Lake Superior.