Surname Сугайло (Сугайло 
, Sugailo 
) , all around the world, is a very rare family name. The last name Сугайло is habitual in Estonia, where it is a rare surname, Russia, where it is a very rare surname, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Сугайло | Russia, Ukraine |
| Sugailo | Estonia |