Allegheny

Allegheny, Alleghany or Allegany may refer to:

Places

Allegheny River, in Pennsylvania and New York
Allegheny Mountains, part of the Appalachian Mountain Range in West Virginia, Pennsylvania, Maryland and Virginia
- Allegheny Mountain (Pennsylvania), major mountain ridge in the northern part of the Allegheny Mountains
- Little Allegheny Mountain, in Pennsylvania and Maryland; see list of mountains of the Alleghenies
- Allegheny Mountain (West Virginia–Virginia), major mountain ridge in the southern part of the Allegheny Mountains
- Back Allegheny Mountain, in West Virginia
Allegheny Plateau, which terminates in the east at the Allegheny Mountains
Allegheny Front, the escarpment delineating the eastern edge of the Allegheny Plateau
Allegheny Formation, a mapped bedrock unit of West Virginia, Maryland and Pennsylvania

Allegheny Cabin (Rohrbaugh Cabin), historic structure in eastern West Virginia
Allegheny Observatory, at the University of Pittsburgh
Allegheny Mountain Tunnel, a vehicular tunnel on the Pennsylvania Turnpike
Allegheny Reservoir, a reservoir on the Allegheny River
Allegheny River Tunnel, a light rail tunnel under the Allegheny River in Pittsburgh
Trans-Allegheny Lunatic Asylum, a former psychiatric hospital turned tourist attraction in West Virginia

Allegheny (train), a passenger train operated by the Pennsylvania Railroad
Allegheny Railroad, a railroad operating in northwestern Pennsylvania (1985–92)
Allegheny station (disambiguation), stations of the name
Allegheny Valley Railroad, a railroad operating in Western Pennsylvania since 1992
Allegheny Valley Street Railway, an electric rail line operating along the Allegheny River (1906–37)
Allegheny class, a class of 2-6-6-6 locomotives

Alleghany Corp., an insurance holding company
Allegheny Airlines, a forerunner of US Airways
Allegheny College, in Meadville, Pennsylvania
Allegheny Energy, a public utility (including its subsidiary Allegheny Power)
Allegheny Foundation, a charitable organization focused on Western Pennsylvania
Allegheny Mountain Radio, a network of radio stations in West Virginia and Virginia
Allegheny Technologies, a specialty metals company
Allegheny (titular see), a Roman Catholic titular see
Pittsburgh Allegheny (International Association), a nineteenth century minor league baseball team that, at times, played under the name "Allegheny"