In all the world, María Belén (María Belén 
) is a rare unisex forename. The given name María Belén is characteristic of Aland Islands, where it is quite a common girly name, Uruguay, where it is quite a rare female name, and Bolivia, where it is a rare girly name. Measured by absolute frequency, it is the most numerous in Spain, Bolivia, and Uruguay. Very seldom, María Belén is the last name as well as the forename.
| VARIANT | COUNTRY |
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| María Belén | Argentina, Libya, Bolivia, Spain, Uruguay |
| maría belén de arteaga y falguera ES (b. 1899) |
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| maría belén turrión nieves researcher ORCID ID = 0000-0001-5146-441X, ES |
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| maría belén franzoni researcher |
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| maría belén bosco researcher |
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Mora, Aguirre, Cabrera, Coronel, Barboza, Perdomo, Ramirez, Rosales, García, Lazzoni, Vaccari, Quiroga, Martinez, Sánchez, Aguilera, Gullermo, Gonzalez, Vásquez, Rodríguez, Rojas Soto, Hernández, Fernández, Arriola, Schepis, Suárez, Martín, Arce, Daza, Vega, Souto, Soria, Díaz, Ortiz, Molina, Medina, Sierra, Jiménez Sarabia, Acosta, Castro, Crespo, Pérez, Romero, Garcia, Gómez, López, Nuñez, Flores, Oviedo, Acuña, and Caballero Romero