Ross Township is a township in Allegheny County, Pennsylvania, United States. It is adjacent to the northern border of Pittsburgh. The population of the township was 33,176 at the 2020 census. While most of the township is residential, a retail corridor is located along McKnight Road along with business districts on U.S. Route 19 and Babcock Boulevard.

U.S. Route 19 (US 19) in Pennsylvania closely parallels Interstate 79 (I-79) for its entire length. US 19 enters Pennsylvania from West Virginia in Greene County near Mount Morris. Its northern terminus is at US 20 in the city of Erie. Part of it is named for Commodore Oliver Hazard Perry, hero of the Battle of Lake Erie.