Wilmerding is a borough in Allegheny County, Pennsylvania, United States. The population was 1,781 at the 2020 census. It is located 12 miles (19 km) southeast of Pittsburgh. At the start of the twentieth century, it had extensive foundries and machine shops of the Westinghouse Air Brake Company. Wilmerding is adjacent to the borough of Turtle Creek, which takes its name from a small stream that flows past both places.

The Westinghouse Air Brake Company General Office Building in Wilmerding, Pennsylvania is a building from 1890. It was listed on the Pittsburgh History and Landmarks Foundation in 1975, National Register of Historic Places in 1987. Originally built as an office building for the Westinghouse Air Brake Company, it housed the George Westinghouse Museum from 2006 to 2016. In 2016 it was sold to the Priory Hospitality Group with the intention of being developed into a boutique hotel. However, the 2020 global pandemic affected those plans and it was announced in November 2021 that the building will be used for an art academy and to house classrooms for the Westighouse ArtsAcademy, a nearby high school.