The Duquesne Incline is a funicular located near Pittsburgh's South Side neighborhood, scaling Mt. Washington in the United States. Designed by Hungarian-American engineer Samuel Diescher, the incline was completed in 1877.

A funicular is a type of cable railway system that connects points along a railway track laid on a steep slope. The system is characterized by two counterbalanced carriages permanently attached to opposite ends of a haulage cable, which is looped over a pulley at the upper end of the track. The result of such a configuration is that the two carriages move synchronously: as one ascends, the other descends at an equal speed. This feature distinguishes funiculars from inclined elevators, which have a single car that is hauled uphill.