Cognomen Lastovkin (Lastovkin 
, Ластовкин 
) , in the entire world, is a rare family name. The cognomen Lastovkin is characteristic of Russia, where it is a rare surname, Kazakhstan, and Belarus, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Lastovkin | United States, Russia, Ukraine |
| Ластовкин | Kyrgyzstan, Kazakhstan, Russia, Belarus |