Family name Loysaga (Loysaga 
) , worldwide, is a very rare surname. The surname Loysaga is characteristic of Philippines, where it is a very rare surname, Mexico, where it is an extremely rare surname, and the United States. Much less frequently, Loysaga is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Loysaga | Mexico, United States, Philippines |