Lyon Lake is a small, natural lake in Fredonia Township, Calhoun County, Michigan. The lake is approximately 3⁄4 mi (1.2 km) long and 1⁄4 mi (0.40 km) wide (125 acres (51 ha)). The lake is part of a small cluster of lakes 6 mi (9.7 km) south of the historic village of Marshall, Michigan. The other lakes are Fish Lake, Pine Lake and Long Lake.
Lyon Lake is surrounded by predominantly modest residential homes that are the primary residences of the homeowners. The southern shore of the lake is adjacent to the Marshall Country Club, which is a private golf course.
