an academic dispute over the legitimacy of the doctoral degrees obtained by French twins Igor and Grichka Bogdanov (usually spelled Bogdanoff in French language publications) and a series of theoretical physics papers written by them in order to obtain degrees.

Mikhail Aleksandrovich Bogdanov (17 November 1914 – 20 September 1995) was a Soviet production designer.

Alexander Aleksandrovich Bogdanov (– 7 April 1928), born Alexander Malinovsky, was a Russian and later Soviet physician, philosopher, science fiction writer and Bolshevik revolutionary.