The Ronga narrow gauge railway (') is located in Mari El, Russia. The peat railway was opened in 1967 and has a total length of . It remains operational . The track gauge is and it operates year-round.
The peat enterprise Ronga was established in the 1960s in the village of Ronga, Mari El. The first line of the Ronga peat narrow-gauge railway was constructed in 1967 within the Sovetsky District, starting from the village of Ronga. The peat railway was specifically built for hauling milling peat and transporting workers, and it operates year-round. At its peak of development, the total length of the narrow-gauge railway exceeded , of which is currently operational. In 2011, repairs were being made to the track.