The MT-LB (Russian: Многоцелевой Тягач Легкий Бронированный, romanized: Mnogotselevoy tyagach legky bronirovanny, literally "multi-purpose towing vehicle light armored") is a Soviet multi-purpose, fully amphibious, tracked armored fighting vehicle in use since the 1970s.

Entering production in the early 1970s, it was cheap to build, being based on many existing components, e.g. the engine, which was originally developed for trucks.

[4][5] Formerly it was also manufactured under license in Poland by Huta Stalowa Wola[6] The crew (a driver and a commander/gunner) sit in a compartment at the front of the vehicle, with the engine behind them.

[7] A small turret at the front of the vehicle fits a 7.62 mm PKT machine gun with 360-degree manual traverse and an elevation of −5 to +30 degrees.

Polish HSW S.A. (Huta Stalowa Wola S.A.) license produced MT-LB since 1976, and it also developed a modified chassis SPG-2, with better floating capabilities.