Ludington is a city in the U.S. state of Michigan. It is the county seat and the largest city in Mason County. The population was 7,655 at the 2020 census.

SS Badger is a passenger and vehicle ferry in the United States that has been in service on Lake Michigan since 1953. Currently, the ship shuttles between Ludington, Michigan, and Manitowoc, Wisconsin, a distance of 62 miles (100 km), connecting U.S. Highway 10 (US 10) between those two cities. She is the last coal-fired passenger vessel operating on the Great Lakes, and was designated a National Historic Landmark on January 20, 2016.