Surname Santos Jr (Santos Jr 
) , in the world, is a rare last name. The last name Santos Jr is habitual in Philippines, where it is a rare surname, the United States, where it is a very rare surname, and Ecuador. Measured by absolute frequency, it is the most numerous in Philippines, the United States, and Brazil. Likewise, Santos Jr is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Santos Jr | Canada, Philippines, Spain, Brazil, United States |