Mount Pleasant is a town in Westchester County, New York. As of the 2010 census, the town population was 43,724.

The John D. Rockefeller Estate, located here, was added to the National Register of Historic Places in 1976 as a National Historic Landmark.

Mount Pleasant is located about 27 miles north of Manhattan. According to the United States Census Bureau, the town has a total area of 32.7 square miles (85 km2), of which 27.7 square miles (72 km2) is land and 5.0 square miles (13 km2), or 15.26%, is water.