Georgii Nikolayevich Flyorov (also spelled Flerov,[1] Russian: Гео́ргий Никола́евич Флёров, IPA: [gʲɪˈorgʲɪj nʲɪkɐˈlajɪvʲɪtɕ ˈflʲɵrəf]; 2 March 1913 – 19 November 1990) was a Soviet physicist who is known for his discovery of spontaneous fission and his important contribution towards the crystallography and material science, for which, he was honored with many awards.

[1] In addition, he is also known for his letter directed to Joseph Stalin, during the midst of World War II, to start a program of nuclear weapons in the Soviet Union.

: 134 [4] After finishing schooling in 1929, he was trained as a mechanic and later as an electrician, first working as a technician at the Kirov Plant.

[5] He is known for writing to Stalin in April 1942 as a lieutenant in the Soviet Air Forces and pointing out the conspicuous silence within the field of nuclear fission in the United States, the United Kingdom and Germany.

In the 1970s, he claimed as his discovery two transition metal elements: seaborgium[8] and bohrium.