Cognomen Asiáin (Asiáin 
) , throughout the world, is an extremely rare last name. The surname Asiáin is habitual in Southern Europe, particularly Spain, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Asiáin | Spain |
|
javier asiáin Spanish poet, ES (b. 1970) |
|
| tomás asiáin Spanish composer (1923-1989), ES (b. 1923) |
|