Narrow-gauge railways in Poland

750 mm (2 ft 5+1⁄2 in) is the most commonly used narrow gauge; it is used, for example, in the Rogów Narrow Gauge Railway (Rogowska Kolej Wąskotorowa) and in Tarnowskie Góry with the world's oldest narrow-gauge railway in continuous service since 1853.

One of the finest of the latter is the 600 mm (1 ft 11+5⁄8 in) narrow-gauge railway (Żnińska Kolej Powiatowa) running from Żnin via Wenecja and Biskupin to Gąsawa in the Pałuki region.

As of 2021, the only narrow-gauge line in Poland with all-year revenue passenger service is Pleszew Local Railway [pl], a 3 km line linking a town of Pleszew with a mainline station located in a nearby village of Kowalew.

A 900 mm (2 ft 11+7⁄16 in) recreational line 4.2 km long had been operating in the Amusement-Recreation Park in Chorzów (now converted to 785), Upper Silesia .

A similar 600 mm (1 ft 11+5⁄8 in) line, Kolejka Parkowa Maltanka, operates in Poznań.