O'Hara Township is a township with home rule status[3] in Allegheny County, Pennsylvania, United States, six miles northeast of Downtown Pittsburgh.

[2] It is named for James O'Hara, an early American industrialist in western Pennsylvania, and a Revolutionary War general.

[5] It consists of five non-contiguous areas, including Sixmile Island,[6] with Sharpsburg, Aspinwall and Fox Chapel separating them.

19.9% of all households were made up of individuals, and 10.0% had someone living alone who was 65 years of age or older.

The township has two volunteer fire departments that are responsible for portions of the township: Pleasant Valley VFD (Station 217) and Parkview VFD (Station 218).

The local Emergency Management Agency for O'Hara Township consist of one Coordinator (James Farringer) and two Deputy Coordinators (Thomas Polczynski and Thomas Heilmann).