Cognomen Маннай-Оол (Маннай-Оол 
) , all around the world, is an extremely rare last name. The family name Маннай-Оол is characteristic of Eastern Europe, particularly Russia, where it is an extremely rare surname. Parts of the name also exists independently as a first name Оол.
| VARIANT | COUNTRY |
|---|---|
| Маннай-Оол | Russia |