Family name Guinera (Guinera 
) , worldwide, is a very rare last name. The cognomen Guinera is habitual in Nicaragua, where it is a very rare surname, Spain, and Philippines, where it is an extremely rare surname. In absolute terms, the name is most common in Spain, Philippines, and Argentina. Likewise, Guinera is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guinera | Argentina, Philippines, United States, Nicaragua, Spain |