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