Denisov (masculine) or Denisova (feminine) is a Russian last name (Russian: Дени́сов/Дени́сова), which is derived from the male given name Denis and literally means Denis's. It is shared by the following people:

• Viktor Deni (1893–1946), born Viktor Denisov, Soviet satirist
• Aleksandr Denisov (born 1989), Russian footballer
• Aleksandr Nikolayevich Denisov (1955-2020), Soviet and Russian military officer
• Andrei Denisov (weightlifter) (born 1963), Israeli Olympic weightlifter
• Andrey Denisov (born 1952), Russian politician
• Daria Denisova (born 1989), Ukrainian artist
• Denis Denisov (born 1981), Russian ice hockey player
• Edison Denisov (1929–1996), Soviet composer
• Elena Denisova (born 1963), Austrian violinist
• Fedor Denisov, Imperial Russian general, suppressor of the Kościuszko Uprising
• Gennadi Denisov (born 1960), Uzbekistan footballer, father of Vitaliy
• Igor Denisov (born 1984), Russian footballer
• Kirill Denisov (born 1988), Russian judoka
• Lyubov Denisova (born 1971), Russian marathoner
• Lyudmyla Denisova (born 1960), Ukrainian politician
• Nikita Denisov (born 1986), Russian footballer
• Nikolai Denisov (1891–1959), Russian footballer
• Roman Denisov (footballer, born 1986), Russian football player
• Roman Denisov (footballer, born 1999), Russian football player
• Sergei Denisov (hockey player)
• Sergei Denisov (aviator)
• Vasily Orlov-Denisov (1775–1843), Cossack Russian general
• Viktor Denisov (born 1966), Russian canoer
• Vitaliy Denisov (born 1987), Uzbekistan footballer, son of Gennadi
• Vitaly Denisov (born 1976), Russian cross country skier
• Vladimir Denisov (ice hockey) (born 1984), Belarusian ice hockey player
• Vladimir Denisov (fencer) (born 1947), Russian Olympic fencer
• Vyacheslav Denisov (born 1983), Uzbekistan basketball player

Other

• Denisov family
• Denisova Cave, an archeological site in Siberia.
  • Denisovan, the ancient hominin discovered in Denisova Cave
• Denisov District of northern Kazakhstan