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Alexander Dmitriyevich Dubyago (Russian:Александр Дмитриевич Дубяго; December 5 (18), 1903,Kazan - October 29, 1959, Kazan) was aSovietastronomer and expert intheoretical astrophysics, who also discovered the faint periodic comet,C/1921 H1, on April 1921.^[1] He was in charge of theAstronomical Observatory of Kazan University from 1941 until 1946.

The lunar craterDubyago is named after him and his father,Dmitry Ivanovich Dubyago.^[2]

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