Jacksons Lake is a small lake in the Moira River and Lake Ontario drainage basins in Addington Highlands, Lennox and Addington County, Ontario, Canada. The lake is about 380 m long and 110 m wide and lies at an elevation of 214 m about 5.5 km west of the community of Kaladar and 2 km north of Ontario Highway 7. The primary inflow at the northwest and outflow at the southeast is an unnamed creek that is a right tributary of Little Skootamatta Creek. That creek flows via the Skootamatta River and Moira River into the Bay of Quinte on Lake Ontario at Belleville.