Kruglov (Russian: Круглов) or Kruglova (feminine; Круглова), is a Russian last name and may refer to:
- Dmitri Kruglov (b. 1984), Estonian footballer
- Georgy Kruglov (1905–1984), Soviet painter
- Leonid Kruglov (1916–1968), Soviet army officer and Hero of the Soviet Union
- Nikolay Kruglov (b. 1950), former Soviet biathlete
- Nikolay Kruglov, Jr. (b. 1981), Russian biathlete and son of Nikolay Kruglov
- Sergei Gennadiyevich Kruglov (b. 1966), Russian poet
- Sergei Nikiforovich Kruglov (1907–1977), Soviet Minister of Internal Affairs
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