Cognomen Amadai (Amadai 
) , around the world, is a very rare family name. The surname Amadai is habitual in Latin America and the Caribbean, particularly Mexico, where it is a very rare surname, and Nicaragua. Also, Amadai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Amadai | Nicaragua, Mexico, Nigeria, United States, India |