Surname Luiza (Luiza 
, Луиза 
, Луїза , along with others...) , in all the world, is a common cognomen. The last name Luiza is habitual in Georgia, where it is a common surname, Armenia, where it is quite a common surname, and Romania (explore the name in all countries). Not in comparison with a country's population, it is commonest in Georgia, Poland, and Brazil. More frequently, Luiza is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Luiza | Georgia, Brazil, India, Poland, Romania |
| Луиза | Kazakhstan, Georgia, Uzbekistan, Russia, Ukraine |
| Луїза | Ukraine |
| לואיזה | Israel |
| irmã maria luiza person identified in the Museu da Pessoa collection, BR (b. 1930) |
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| marii︠a︡ luiza (b. 1933) |
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| natália luiza Portuguese actor, PT (b. 1960) |
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| vera lucia luiza researcher |
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| ana luiza |
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| carlos luiza association football player, CO (b. 1992) |
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| talita luiza person identified in the Museu da Pessoa collection, BR (b. 1995) |
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| ana luiza Person identified in the Museu da Pessoa collection (100123), BR (b. 1998) |
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| ana luiza Person identified in the Museu da Pessoa collection (114769), BR |
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