Kvasov may refer to:
- Kvasov, a Russian-language surname
- Kvašov a village in Slovakia
Kvasov or Kvassov (feminine: Kvasova or Kvassova) is a Russian-language surname.
The surname may refer to:
- Andrey Kvasov (c. 1720 – c. 1770), a notable Baroque architect who worked in Russia and Ukraine.
- Andrey Kvassov (b. 1976), a Kazakh swimmer.
- Sergei Kvasov (b. 1983), a Russian professional football player.