The Mayslake Peabody Estate is an estate constructed as a country home for Francis Stuyvesant Peabody between 1919 and 1922. The estate is located in the western Chicago suburb of Oak Brook, Illinois, United States, and is now part of the Mayslake Forest Preserve administered by the Forest Preserve District of DuPage County. On November 8, 1994, Mayslake Hall was listed on the National Register of Historic Places.