Buttermilk Falls State Park is a 811-acre (3.28 km2) state park located southwest of Ithaca, New York, United States. Like Robert H. Treman State Park, a portion of the land that was to become the state park came from Robert and Laura Treman in 1924.

Ithaca is a city in and the county seat of Tompkins County, New York, United States. Situated on the southern shore of Cayuga Lake in the Finger Lakes region of New York, Ithaca is the largest community in the Ithaca metropolitan statistical area. It is named after the Greek island of Ithaca. As of 2020, the city's population was 32,108.