All around the world, Alencastro (Alencastro 
) is a very rare primarily boy's, but very infrequently female given name. The first name Alencastro is habitual in Latin America and the Caribbean, particularly Brazil, where it is a very rare primarily male, but scarcely female name. Predominantly, Alencastro is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Alencastro | Colombia, Brazil, Mexico, United States, Argentina |