The Wanamaker, Kempton & Southern, Inc. (WK&S) is a privately owned heritage railroad company in Kempton, Pennsylvania. The company was founded in 1963 and operates over an isolated remnant of a former Reading Company line. Its nickname is the Hawk Mountain Line due to its proximity to the Hawk Mountain range. The line runs along Ontelaunee Creek near areas favored by birdwatchers.
The WK&S operates tourist trains on about three miles (4.8 km) of track between Kempton and Wanamaker regularly on weekends between May and November as well as on special occasions using either diesel or steam engines. Its Kempton station is not the original one, but consists of buildings from the Reading Company that were brought to their current location. The ticket office was the original station at Joanna, Pennsylvania.