Last name Barjona (Barjona 
) , across the world, is a rare surname. The family name Barjona is habitual in Portugal, where it is a rare surname, Brazil, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Portugal, Brazil, and the United States. Likewise, Barjona is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Barjona | Portugal, Brazil, United States, India, Democratic Republic of the Congo |
| manuel josé barjona Portuguese academic, PT (b. 1760) |
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augusto césar barjona de freitas Portuguese jurist (1834-1900), PT (b. 1834) |
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| antónio alfredo barjona de freitas Portuguese colonial administrator, military officer and politician; Colonial governor of Cape Verde, PT (b. 1847) |
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| augusto alexandre barjona de freitas Portuguese physician, PT (b. 1857) |
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| maria eduarda barjona de freitas foi uma jornalista, escritora, investigadora e crítica literária portuguesa, enfermeira militar, tendo sido condecorada com a medalha de louvor, PT (b. 1882) |
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| antónio joaquim barjona Portuguese physician, Professor of Medicine, PT |
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