The Greendale Historic District is a National Historic Landmark District encompassing the historic core of the village of Greendale, Wisconsin. The village core was designed in the 1930s as part of a New Deal program to establish so-called "greenbelt towns" as model suburbs, and is one of three such communities built by the federal government. It was added to the National Register of Historic Places in 2005 and designated as a National Historic Landmark in 2012.