Cognomen Sanx (Sanx 
) , throughout the world, is a very rare family name. The cognomen Sanx is habitual in Spain, where it is a very rare surname, Mexico, where it is an extremely rare surname, and Argentina. Measured by absolute frequency, it is commonest in Spain, Mexico, and the United States. Much less frequently, Sanx is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sanx | Mexico, Spain, United States, Philippines, Argentina |