Aleksandr Fiodorovich Sevastianov, also written as Alexander Fyodorovich Sevastyanov, (Russian: Александр Фёдоровичl Севастьянов; (1771-07-01)1 July 1771, Ryazan Governorate – (1824-12-05)5 December 1824, Saint Petersburg) was a Russian naturalist, poet, translator, and academician of the Imperial Academy of Sciences (from 1800). He was a member of many Russian and foreign scientific societies, including an honorary member of the Linnean Society of London (1809).