Cognomen Mecilla (Mecilla 
) , globally, is a very rare family name. The last name Mecilla is characteristic of Latin America and the Caribbean, particularly Argentina, where it is a rare surname, and Mexico, where it is an extremely rare surname. Also, Mecilla is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mecilla | Mexico, Argentina, Philippines, United States, India |