In the entire world, Loureiro (Loureiro 
) is a rare unisex forename. The first name Loureiro is characteristic of Luxembourg, where it is quite a rare feminine name, Portugal, where it is a rare epicene name, and France, where it is a very rare gender-neutral name. Not in comparison with a country's population, this name is the most popular in Portugal, China, and France. Much more prevalently, Loureiro is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Loureiro | Brazil, Spain, Portugal, Angola, France |
| lourenço trigo de loureiro Brazilian author and politician, BR (b. 1793) |
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| urbano josé de sousa loureiro Portuguese writer, PT (b. 1845) |
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| urbano loureiro (b. 1845) |
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| leopoldino gomes loureiro Portuguese teacher, PT (b. 1882) |
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valentim loureiro Portuguese politician and football chairman, PT (b. 1938) |
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| ferrer loureiro PT (b. 1930) |
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| klever rêgo loureiro Brazilian politician, BR (b. 1951) |
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| neto loureiro Brazilian politician |
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| wilson loureiro |
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| frei josé loureiro |
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