Family name Kasylova (Kasylova 
, Касылова 
) , worldwide, is a very rare last name. The family name Kasylova is habitual in Kyrgyzstan, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Kasylova | Russia |
| Касылова | Kyrgyzstan, Kazakhstan, Russia |