Worldwide, San Agustin (San Agustin 
) is a very rare predominantly boy's, but very infrequently feminine first name. The given name San Agustin is habitual in Peru, where it is a very rare male name, Philippines, where it is a very rare largely masculine, but infrequently female name, and Mexico, where it is a very rare boy's name. Predominantly, San Agustin is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| San Agustin | Mexico, United States, Guam, Spain, Philippines |