The PKP class Lyd2 (manufacturer designation L30H) is a narrow gauge diesel-hydraulic locomotive built by FAUR (formerly 23 August Works) in Romania, for use initially for sugar cane railway in Egypt with later variants developed for use in Poland, Romania and Albania.

The Lyd2 classification gives the technical details of the locomotives in Polish State Railways (PKP) system.

L indicates a narrow gauge locomotive, y indicates 3 axles (0-6-0 or C), d indicates diesel fuel, and finally, 2 indicates hydraulic transmission.

They are split between Białośliwie, Żnin, Cisna (Bieszczady Forest Railway), Bytom Karb (Lyd2-101 since 2020), Środa Wielkopolska (since 2020), Piaseczno and Koszalin depots.

[2] Slezské zemské dráhy, a company which operates passenger trains on narrow gauge Třemešná ve Slezsku – Osoblaha Railway during summer, purchased a Lyd2 in 2005.