Surname Мамои (Mamoi 
, Мамои 
) , around the globe, is a rare cognomen. The surname Мамои is characteristic of Armenia, where it is quite a rare surname, Georgia, where it is a rare surname, and Portugal, where it is a very rare surname. In absolute terms, it is the most numerous in Russia, Armenia, and Malaysia. Likewise, Мамои is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mamoi | Portugal, Romania, South Africa, Malaysia, India |
| Мамои | Armenia, Russia |