Belousov
Belousov (or Beloussov), feminine: Belousova is a Russian-Polish patronymic surname formed from the nickname Belous (which also became a surname) derived from Belye Usy (Russian: Белые Усы), (Polish: Białe wąsy) "White Moustache".
Notable people with this surname include:
- Alexandr Belousov (born 1998), Moldovan footballer
 - Andrey Belousov (born 1959), Russian defense minister (2024-present)
 - Anna Belousova (born 1996), female Russian swimmer
 - Boris Belousov (born 1934, Soviet politician
 - Boris Belousov (cosmonaut) (1930–1998), Soviet cosmonaut
 - Boris Pavlovich Belousov (1893–1970), Soviet chemist
 - Denys Byelousov (born 1996), Ukrainian footballer
 - Dmitri Belousov (born 1980), Russian footballer
 - Georgi Belousov (born 1990), Russian ice hockey player
 - Igor Belousov (1928–2005), Soviet politician
 - Ilya Belousov (born 1978), Russian football midfielder
 - Irina Belousova (born 1954), Ukrainian politician
 - Ludmila Belousova (1935–2017), Russian figure skater
 - Mikhail Belousov (born 1953), Russian politician
 - Piotr Belousov (1912–1989), Soviet, Russian painter, graphic artist, and art teacher
 - Sergey Belousov (born 1990), Russian association footballer
 - Sonya Belousova (born 1990), Russian-born composer, pianist and recording artist
 - Vadim Belousov (born 1960), Russian politician
 - Valentin Danilovich Belousov (1925–1988), Moldavian Soviet mathematician
 - Valeriy Belousov (born 1970), decathlete from Russia
 - Valery Belousov (1948–2015), Russian professional ice hockey coach and player
 - Vladimir Belousov (1907–1990), Soviet geologist
 - Vladimir Belousov (ski jumper) (born 1946), Soviet ski jumper
 - Yaroslav Belousov (born 1991), Russian political prisoner
 - Yevgeny Vladimirovich Belousov (born 1962), Soviet luger
 - Yuri Leonidovich Belousov (1945–2000), Soviet and Russian researcher and engineer
 - Zhenya Belousov (1964–1997), Soviet and Russian pop singer