This is a list of all lighthouses in the U.S. state of Michigan as identified by the United States Coast Guard. Michigan is home to lights on four of the Great Lakes, Lake St. Clair and connecting waterways. The first lighthouse in the state, Fort Gratiot Light, was erected in 1825. It is still active. If not otherwise noted, focal height and coordinates are taken from the United States Coast Guard Light List, while location and dates of activation, automation, and deactivation are taken from the United States Coast Guard Historical information site for lighthouses.