Sturgeon Lake is a lake in the Kawartha Lakes region of Ontario, Canada. It is part of the Trent-Severn Waterway. The lake is Y shaped and has the communities of Lindsay, Fenelon Falls, Sturgeon Point and Bobcaygeon at the north-west, south, central and north-east points of the Y respectively. The lake is approximately from the southern to the north-eastern extremes, the longer axis.
The Scugog River flows into the lake at the southern apex. Cameron Lake also flows into this lake, via the Fenelon River at the north-western extreme. Emily Creek empties into the lake at the middle south.
The lake outflow is through the Big Bob and Little Bob channels of the Bobcaygeon River at the north-east of the lake.