Cognomen Guamadil (Guamadil 
) , in all the world, is a very rare surname. The family name Guamadil is habitual in South-eastern Asia, particularly Philippines, where it is a very rare surname. Much less frequently, Guamadil is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guamadil | Philippines |