Lake Scugog is an artificially flooded lake in Scugog, Regional Municipality of Durham and the unitary city of Kawartha Lakes in central Ontario, Canada. It lies between the communities of Port Perry and Lindsay. The lake has been raised and lowered several times over its history. Though not technically part of the Kawartha lakes due to its shallow depths, it is often geographically linked to them. Its sole outflow, the Scugog River, connects to Sturgeon Lake. Lake Scugog is in the Great Lakes Basin and forms part of the Trent–Severn Waterway.