Doreen Lake is a small, remote backcountry lake situated in the Osoyoos Division Yale Land District of British Columbia, roughly 30 km from Winfield near Kelowna in the North Okanagan.

It sits at an elevation of approximately 4,461 feet (1,359 m) and is reached via Beaver Lake Road, a drive of about an hour from Winfield. The lake is designated fly-fishing only and is known for an abundance of rainbow trout.

A BC Forest Service Recreation Site on the shore offers around 10 campsites, outhouses, and a cartop boat launch, making it a quiet destination for fishing, canoeing, and non-motorized boating in the surrounding backcountry wilderness.