Allegany is the name of several places in the United States:
Communities
edit- Allegany County, Maryland
- Allegany County, New York
- Allegany (town), New York, in Cattaraugus County
- Allegany (village), New York, in the above town
- Allegany Indian Reservation, in Cattaraugus County, New York
- Allegany State Park, a New York state park in Cattaraugus County on the Pennsylvania border
- Allegany, Oregon, an unincorporated community in Coos County
- Allegany Township, Pennsylvania