Winagami Lake is a large and shallow lake in northern Alberta, Canada. It is in Big Lakes County and Municipal District of Smoky River No. 130, northeast of the junction of Highway 2 and Highway 679. It lies in the hydrographic basin of the Athabasca River. The name comes from a Cree phrase meaning "dirty-water lake": ᐃᐧᓇᑲᒣᐤ ᓵᑳᐦᐃᑲᐣ (winakamew sâkâhikan). The lake contains lake whitefish, yellow perch, northern pike and walleye. The lake is controlled by means of a weir, and has a mean depth of 1.7 m, with a maximum depth of 4.7 m. Winagami Lake Provincial Park is on the western, southern and eastern shores of the lake.