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