Cedar River (also known as the Big Cedar River)[1] is a 67.1-mile-long (108.0 km)[2] river in the U.S. state of Michigan.

It rises in the northern part of Menominee County at 45°53′18″N 87°35′15″W / 45.88833°N 87.58750°W / 45.88833; -87.58750 (Cedar River (source))[1] and flows mostly south and east to empty into Green Bay of Lake Michigan at 45°24′35″N 87°21′05″W / 45.40972°N 87.35139°W / 45.40972; -87.35139 (Cedar River (mouth))[1] in the community of Cedar River.

The Little Cedar River, a tributary of the Menominee River, also flows mostly southward in Menominee County approximately 10 to 15 miles (16 to 24 km) west of the Cedar River.

From the mouth: The Cedar River drains all or portions of the following: