| Allegheny High School | |
| Location: | 220 W. Commons St., Pittsburgh, Pennsylvania |
| Coordinates: | 40.4531°N -80.0089°W |
| Built: | 1904 |
| Architect: | Frederick J. Osterling |
| Architecture: | Classical Revival, Art Deco |
| Added: | September 30, 1986 |
| Refnum: | 86002643 |
| Designated Other1 Name: | City of Pittsburgh Historic Structure |
| Designated Other1 Date: | March 15, 1974[1] |
| Designated Other1 Abbr: | CPHS |
| Designated Other1 Link: | List of City of Pittsburgh historic designations |
| Designated Other1 Color: | black |
| Designated Other1 Textcolor: | gold |
| Designated Other2: | PHLF |
| Designated Other2 Date: | 1992[2] |
Allegheny High School is a former high school in the Allegheny Center neighborhood of Pittsburgh, Pennsylvania. It opened in 1888 as the sole high school serving what was then the independent city of Allegheny. An annex was added in 1904 and the original 1888 building was replaced by a new Art-Deco-style structure in 1936. The surviving 1904 and 1936 buildings, which were designed by Frederick J. Osterling and Marion M. Steen respectively, were listed on the National Register of Historic Places in 1986.[3]
The campus is no longer a high school but is still used by Pittsburgh Public Schools for elementary and middle grades (Allegheny PreK–5 and Allegheny 6–8).
Notable Allegheny High graduates include William N. Robson, award-winning writer, director, and producer from the old-time radio era[4] and Dorothy Mae Richardson, an African American community activist whose work was essential to the founding of the Neighborhood Reinvestment Corporation.
American novelist Willa Cather taught English and Latin at Allegheny High School, where she came to head the English department.