Cognomen Protacio (Protacio 
) , around the world, is quite a common surname. The cognomen Protacio is habitual in Philippines, where it is quite a rare surname, United Arab Emirates, and Mexico, where it is a rare surname. Measured by absolute frequency, it is commonest in Philippines, Mexico, and Brazil. Also, Protacio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Protacio | Philippines, United Arab Emirates, Brazil, United States, Mexico |