Ellery is a town in Chautauqua County, New York, United States, located northwest of Jamestown and with an extended lakefront on the east side of Chautauqua Lake. In the 2010 census, Ellery had a population of 4,528.
The first settlement was made around 1806. The town of Ellery was founded in 1821 from a part of the town of Chautauqua. William Ellery, signer of the Declaration of Independence, is the town's namesake. The lake frontage was developed early as a tourist and recreational location.