Aleksandr Aleksandrovich Mikulin (Russian: Александр Александрович Микулин; 14 February 1895 – 13 May 1985) was a Soviet aircraft engine designer and chief designer in the Mikulin OKB.

[1] His achievements include the first Soviet liquid-cooled aircraft piston engine, the Mikulin AM-34, and the Mikulin AM-3 turbojet engine for the Soviet Union's first jet airliner, the Tupolev Tu-104.

Mikulin also took part in the Tsar Tank project.

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