Surname Guillán (Guillán 
) , around the world, is a very rare family name. The cognomen Guillán is habitual in Spain, where it is a very rare surname, and Argentina, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Guillán | Spain, Argentina |
|
juan novás guillán Spanish professor, ES (b. 1880) |
|
| félix guillán (b. 1913) |
|