Marley is an unincorporated community and census-designated place (CDP) in Will County, Illinois, United States.

It is in the northern part of the county, between Homer Glen to the north and Mokena to the south.

Marley is bordered to the south by Interstate 80, but with no direct access.

U.S. Route 6 (Southwest Highway) passes just north of Marley, leading west-southwest 9 miles (14 km) to Joliet and northeast 6 miles (10 km) to Orland Park.

Marley was first listed as a CDP prior to the 2020 census.