Throughout the world, Leida (Leida 
, 雷达 
, Leiden 
) is a common dominantly female, but seldom boy's first name. The first name Leida is habitual in Cabo Verde, where it is quite a common gender-neutral name, Puerto Rico, where it is quite a rare girly name, and the Dominican Republic. Not in comparison with a country's population, it most frequently occurs in Brazil, China, and Mexico. Very seldom, Leida is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Leida | Mexico, Dominican Republic, United States, Brazil, Venezuela |
| 雷达 | China |
| Leiden | Mexico, Colombia, United States, Brazil, Venezuela |
| Лейда | Kazakhstan, Russia, Ukraine, Belarus |
| leida hulscher NL (b. 1892) |
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| leida alttoa (b. 1893) |
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| leida org Estonian painter, EE (b. 1907) |
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| leida kibuvits Estonian author and writer (1907-1976), EE (b. 1907) |
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| leida tigane Estonian writer (1908-1983), EE (b. 1908) |
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| leida adamberg (b. 1899) |
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| leida loone Estonian historian, EE (b. 1911) |
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| leida johanson Estonian lawyer and politician, EE (b. 1911) |
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| leida sevruk Estonian teacher (1913-2009), EE (b. 1913) |
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| leida ulp Estonian teacher, EE (b. 1916) |
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| leida aru actor, EE (b. 1917) |
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| leida sibul Estonian singer, EE (b. 1920) |
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| leida soom EE (b. 1912) |
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| leida rammo Estonian actress (1924-2020), EE (b. 1924) |
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| leida rives-elfwén SE (b. 1915) |
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