Baker Lake is a small freshwater lake located within the Alpine Lakes Wilderness in a valley on the northern slope of Keechelus Ridge between Keechelus Lake and Kachess Lake in Kittitas County, Washington, United States.

Big Creek, a tributary to the Taylor River, exits Baker Lake into a canyon that produces Big Creek Falls.

Because of its proximity to Rampart Ridge, Interstate 90 and the cirque of Keechelus Ridge a short distance to the south, the lake is a popular area for hiking, swimming, and fishing brook trout, golden trout and rainbow trout.

[1] Access to Baker Lake is provided through Keechelus Ridge off Forest Road 126.

A short distance southwest is Microwave Hill, which is named because of a microwave radio tower on its summit.