The Progress D-18T (or Lotarev D-18T) is a 51,500 lbf (229 kN) high-bypass turbofan that powers the Antonov An-124 Ruslan and An-225 large freighters.

The engine was developed in the second half of the 1970s by the then Soviet Ivchenko-Progress design bureau.

It was the first engine in the USSR that could deliver more than 20,000 kgf (~196 kN or ~44,000 lbf) of thrust.

An upgraded 3M version was developed to reduce emissions and increase the life of the hot section to 14,000 h, and is introduced on An-124s of Antonov Airlines.

[4] On 13 November 2020 a Volga-Dnepr Airlines An-124 had an uncontained failure of the inboard left (number 2) D-18T engine.