Ecorse is a city in Wayne County in the U.S. state of Michigan, named for the Ecorse River. The population was 9,512 at the 2010 census.

Formerly named "River Aux Echorches", which means "The River of the Barks" in English, the area that would become Ecorse was originally used as a burial ground for the Native American tribes of the area, and later settled by the French in the last two decades of the 18th century.

In the 1836, the settlement was named Grand Port, but remained unincorporated within Ecorse Township. The settlement incorporated as the village of Ecorse in 1902. Ecorse became a significant economic force in the region when its first steel mill, Michigan Steel Mill, began operation in 1923. The village would finally incorporate as a city in 1941.

Since the post-war era, the city, like most other industrial inner-ring suburbs, has fallen into economic decline. In December 1986, the Wayne County Circuit Court issued a court order appointing a receiver for the bankrupt city. The receivership would last until August 1990, but the city's finances were monitored by the state for another ten years, afterwards.