Last name بالتزار (Baltasar 
, Baltzar 
, بالتزار) , around the world, is a common surname. The cognomen بالتزار is characteristic of Southern Europe, particularly Spain, where it is quite a common surname, Portugal, where it is quite a rare surname, and Malta. Not in comparison with a country's population, it is commonest in Spain, Mexico, and Portugal. Also, بالتزار is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Baltasar | Spain, Argentina, Mexico, Indonesia, Equatorial Guinea |
| Baltzar | Philippines, Germany, Brazil, Mexico, Sweden |