Throughout the world, Juanillo (Juanillo 
) is quite a rare boy's first name. The first name Juanillo is habitual in Philippines, where it is a rare masculine name, Spain, where it is a rare predominantly boy's, but very infrequently girly name, and Mexico, where it is a very rare male name. More frequently, Juanillo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Juanillo | Saudi Arabia, Philippines, Mexico, Colombia, Peru |