Surname Baltasar (Baltasar 
, Балтазар 
, Балтасар ) , worldwide, is a common family name. The cognomen Baltasar is habitual in Southern Europe, particularly Spain, where it is quite a common surname, Portugal, where it is quite a rare surname, and Malta. In absolute terms, it is commonest in Spain, Mexico, and Portugal. Also, Baltasar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Baltasar | Indonesia, Equatorial Guinea, Spain, Mexico, Argentina |
| Балтазар | Kazakhstan, Russia, Ukraine |
| Балтасар | Russia |
Balcer, Baldassare, Baldassarre, Balsazar, Baltazar, Baltazár, Balthasar, Balthassar, Balthazar, Balthazard, Balthazaro, Baltsar, Baltzar, Boldizsar, Boldizsár, Boltezar, Boltežar, Бальтазар, Болдижар, and בלטסר
| felipe baltasar ES (b. 1569) |
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| juan antonio baltasar (1697-1763), MX (b. 1697) |
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| baltasar i salvatella, pelegrí (b. 1813) |
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francesc baltasar i albesa Spanish politician, ES (b. 1949) |
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| luis fernández baltasar Uruguayan drawer, UY (b. 1905) |
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| eva baltasar Catalan-language writer and poet from Spain, ES (b. 1978) |
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| pablo benavente baltasar Spanish politician, ES |
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| lluna baltasar comellas Spanish journalist, ES |
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