Belousov (or Beloussov) is a Russian surname formed from the nickname Belye Usy (Russian: Белые Усы) meaning "White Moustache", and in the patronymic form. The English equivalent would be "Grey Moustache", inferring to someone older and grey-haired, i.e. wise". The feminine form of the surname is Belousova. The Ukrainian language name of the same derivation is Bilous in the non-patronymic form.
The surname Belousov may refer to:
Boris Pavlovich Belousov, Soviet chemist
Boris Nikolayevich Belousov, Soviet cosmonaut
Leonid Belousov, midfielder for FC Gornyak Uchaly
Ludmila Belousova (born 1935), Russian figure skater
Vladimir Belousov (1907–1990), Soviet geologist
Vladimir Belousov (ski jumper) (born 1946), Soviet ski jumper
Yuri Leonidovich Belousov (1945–2000), Soviet and Russian researcher and engineer
Irina Belousova (born 1954), Ukrainian politician
Patricija Belousova (born 1995), Lithuanian dancer and beauty pageant
Sonya Belousova (born 1990), Russian-born composer, pianist and recording artist
Yaroslav Belousov (born 1991), a Russian political prisoner
