Great Valley is a town in Cattaraugus County, New York, United States.

[2] The town is named after its local geographical setting, a relative comparison of two tributaries (the other being the neighboring Little Valley) of the Allegheny River.

The town of Great Valley is centrally located in the county, northeast of the city of Salamanca.

Great Valley's east boundary is formed with the towns of Humphrey and Allegany.

A very small part of southwestern Great Valley borders the town of Red House.

The seasonal theme park Pumpkinville is in the neighboring town of Humphrey but carries a Great Valley mailing address.

[7][8] The Buffalo and Pittsburgh Railroad runs a line through Great Valley, paralleling Route 219.

An additional United Methodist Church in Sugartown, dating to before the merger with the Brethren, operated until 1981 before merging with its nearby counterpart.