In all the world, Luíza (Luíza 
) is a very rare feminine given name. The forename Luíza is habitual in Latin America and the Caribbean, particularly Brazil, where it is a very rare female name. Very seldom, Luíza is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Luíza | United Kingdom, France, Brazil, Portugal, United States |
| luíza barreto leite Brazilian actress, BR (b. 1909) |
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luíza tomé Brazilian actress, BR (b. 1961) |
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| luíza maranhão Brazilian actress, BR (b. 1940) |
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| luíza sumiko kinoshita-gouvêa Brazilian botanist, BR (b. 1947) |
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| luíza lane de barros dantas researcher (ORCID 0000-0002-5342-9332) |
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| luíza araújo da costa xavier researcher |
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| luíza zuvanov researcher |
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| luíza carraschi de oliveira researcher (ORCID 0000-0003-3107-2384) |
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| luíza costa moura botanist |
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| luíza sarmento Brazilian journalist, BR |
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| luíza antunes de castro-jorge researcher (ORCID 0000-0002-1595-3037) |
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| luíza pereira maia de oliveira researcher (ORCID 0000-0002-7780-8222) |
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| luíza rodrigues alves abreu researcher (ORCID 0000-0001-9926-6359) |
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| luíza teixeira-costa researcher |
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| luíza de orléans bragança (born 1984) (b. 1984) |
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Melo, Martins, Machado, Moreira, Menezes, Miranda, Almeida, Andrade, Araújo, Cardoso, Camargo, Barbosa, Ribeiro, Fonseca, Medeiros, Carvalho, Vitória, Ferreira, Oliveira, Rodrigues, Fernandes, Magalhães, Vieira, Helena, Guedes, Garcia, Cruz, Dias, Lima, Maria, Moura, Silva, Souza, Alves, Costa, Brito, Guimarães, Rocha, Nunes, Mendes, Santos, Soares, Aguiar, Castro, Campos, Coelho, Borges, Duarte, Gomes, and Gonçalves