Ivchenko-Progress ZMKB (Ukrainian: Запорізьке машинобудівне конструкторське бюро «Прогрес» ім.
О.Г.Івченка, Zaporizhzhia Machine-Building Design Bureau "Progress" State Enterprise named after Academician O.H.Ivchenko), formerly OKB-478 and Ivchenko Lotarev, is a state design bureau that creates drafts and plans for aircraft engines in Zaporizhzhia, Ukraine whose products are widely used in both civil and military aircraft, most notably by Antonov, Beriev, Ilyushin, Tupolev, Mil and Yakovlev.
The design bureau works closely with Motor Sich, the turbine manufacturer located in Zaporizhzhia which produces those engines.
Polish manufacturer PZL-Mielec used the Progress ZMKB AI-25TL engine in the PZL M-15 Belphegor cropduster.
Many of the bureau's designs were or are produced at Motor Sich, located at Zaporizhzhia International Airport.