Throughout the world, Sebastian Alberto (Sebastian Alberto 
) is quite a rare masculine first name. The forename Sebastian Alberto is habitual in Chile, where it is quite a common masculine name, Malta, where it is quite a rare male name, and Costa Rica. Measured by absolute frequency, it is the most numerous in Latin America and the Caribbean, particularly Chile, Argentina, and Costa Rica. Much less frequently, Sebastian Alberto is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sebastian Alberto | Peru, Argentina, Chile, Ecuador, Costa Rica |