Last name Manuain (Manuain 
) , in all the world, is a rare cognomen. The cognomen Manuain is characteristic of Indonesia, where it is a rare surname, and Australia, where it is a very rare surname. Very seldom, Manuain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Manuain | Australia, India, Indonesia |