Surname Siloa (Siloa 
) , worldwide, is a very rare cognomen. The cognomen Siloa is characteristic of Indonesia, where it is a very rare surname, Mexico, where it is an extremely rare surname, and Philippines. Measured by absolute frequency, it is the most numerous in Indonesia, Mexico, and the United States. Also, Siloa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siloa | Indonesia, Mexico, United States, India, Brazil |