Open Joint Stock Company «Ilyushin Aviation Complex», operating as Ilyushin (Ilyushin) or Ilyushin Design Bureau, is a Russian aircraft manufacturer and design bureau, founded by Sergey Vladimirovich Ilyushin. Ilyushin was established under the Soviet Union. Its operations began on January 13, 1933, by order of P. I. Baranov, People's Commissar of the Heavy Industry and the Head of the Main Department of Aviation Industry. In Soviet/Russian nomenclature, aircraft from Ilyushin are prefixed Il. The head office of Ilyushin is located in Aeroport District, Northern Administrative Okrug, Moscow.
Aviation Industries Ilyushin is a subsidiary established in 1992 to act as Ilyushin's marketing and customer service arm.
Ilyushin Finance Co is a dedicated leasing and finance subsidiary that provides financial services for Ilyushin as well as other manufacturers
Ilyushin has developed aircraft for widely varying roles over the years. The Russian government has merged Ilyushin with Mikoyan, Irkut, Sukhoi, Tupolev, and Yakovlev under a new company named United Aircraft Corporation.
In July 2014 it was reported that Ilyushin and Myasishchev would merge to form the United Aircraft Corporation business unit Transport Aircraft.