Worldwide, San Antonio (San Antonio 
) is a very rare principally boy's, but very seldom girly forename. The first name San Antonio is habitual in Mexico, where it is a very rare boy's name, and the United States, where it is an extremely rare epicene name. Predominantly, San Antonio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| San Antonio | Philippines, United States, Mexico, Spain, Guatemala |