Huntingdon & Broad Top Mountain Railroad (H&BTM) (reporting mark HBTM) is a former short line railroad company operating passenger and freight service on standard gauge track in south central Pennsylvania.
Operational headquarters were in Huntingdon, and Saxton, with financial and business offices located in Philadelphia. The primary shop facilities were located in Saxton; auxiliary car shop facilities were at Huntington. Turntables were located at Huntingdon, Saxton, and Mount Dallas, Pennsylvania.
The Huntingdon and Broad Top Mountain Railroad and Coal Company was chartered on May 6, 1852, and organized on January 10, 1853. The purpose of the line was to provide a rail link from Huntingdon to Bedford, and to provide a competitive alternate route to local coal producers to break the Baltimore and Ohio Railroad's monopoly on coal that was being shipped from the Cumberland, Maryland, area. The existence of high quality semi-bituminous coal in the Broad Top Mountain region was known since colonial times. Before the railroad, wagon or pole barge was the only practical method of bringing the coal from the remote region to market.
The 31 mile portion of the main line from Huntingdon to Hopewell, via Saxton and Riddlesburg, was completed in 1855. On February 3, 1859, the Bedford Railroad Company was chartered to provide a railroad connection for Bedford, and was incorporated February 19, 1859. This company, with financial assistance from the Pennsylvania Railroad (PRR), built a line from Mount Dallas to Hopewell in July 1863, connecting with the H&BTM. It was merged into the H&BTM on August 17, 1864. Total track mileage at the company's height was just over 72 miles.