Fiodar Fiodarau, (Belarusian: ????? ???????? ???????, Fiodar Ivanavic Fiodarau, Russian: ????? ???????? ???????, Fedor Ivanovich Fedorov), (June 19, 1911 – October 13, 1994) was a Soviet and Belarusian physicist, whose scientific interests ranged from optics and spectroscopy to the theory of elementary particles.