Mahoning may refer to:
Communities
- Mahoning, Ohio, an unincorporated community in Portage County
- Mahoning County, Ohio
- Mahoning Township, Armstrong County, Pennsylvania
- Mahoning Township, Carbon County, Pennsylvania
- Mahoning Township, Lawrence County, Pennsylvania
- Mahoning Township, Montour County, Pennsylvania
Watercourses
- Mahoning Creek (Allegheny River), a tributary of the Allegheny River in Pennsylvania
- Mahoning Creek (Lehigh River), a tributary of the Lehigh River in Lehigh County
- Mahoning Creek (Susquehanna River), a tributary of the Susquehanna River in Montour County
- Mahoning River, a tributary of the Beaver River in Ohio and Pennsylvania
Other uses
- Mahoning Drive-In Theater, a drive-in theater in Lehighton, Pennsylvania
- Mahoning Valley, northeast Ohio and northwest Pennsylvania