The Western River Railroad (reporting mark WRR) is a 2 ft 6 in (762 mm) narrow gauge rail transport attraction in Tokyo Disneyland, which opened on April 15, 1983.

Its route is 5,283 feet (1,610 m) long and takes guests through the Adventureland, Westernland, and Critter Country sections.

At the time that the Western River Railroad was opened, Japanese rail regulations required that any railway line with more than one stop be subject to the same rules as any other conventional rail line, which included running on a timetable and collecting fares.

[5] Finally, it enters through a deep tunnel containing the Primeval World Diorama (featuring animatronic dinosaurs) and exits back to the Adventureland Station.

[5] The Western River Railroad has four 2 ft 6 in (762 mm) narrow gauge 2-4-0 steam locomotives built by Kyosan Kogyo Co., which were named after famous rivers located primarily in the Western United States (hence the name of the railroad).