Cognomen Acain (Acain 
) , throughout the world, is quite a common family name. The family name Acain is characteristic of Philippines, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Qatar. Not in comparison with a country's population, the name is most common in Philippines, the United States, and Saudi Arabia. Very seldom, Acain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Acain | Philippines, United Arab Emirates, India, United States, Saudi Arabia |