Throughout the world, María Rosario (María Rosario 
) is a rare epicene first name. The first name María Rosario is habitual in Aland Islands, where it is quite a common feminine name, Bolivia, where it is a rare female name, and Spain, where it is a rare unisex name. Measured by absolute frequency, the name is most common in Spain, Bolivia, and Colombia. Very seldom, María Rosario is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| María Rosario | Aland Islands, Spain, Bolivia, Colombia, Peru |
| maría rosario aráoz pinto PE (b. 1897) |
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| maría rosario juaneda Spanish politician, ES (b. 1952) |
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| maría rosario cruz i rivarés ES |
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Diez, Perez, Flores, Cortés, Hurtado, Stallone, Dangiolo, Martínez, Rodriguez, Ruiz Ruiz, Alava Zambrano, Bustos Acuña, Marín Escobar, Calzada Alcalde, and Muñoz Romero