All over the world, Matias Sebastian (Matias Sebastian 
) is quite a rare masculine given name. The forename Matias Sebastian is habitual in Latin America and the Caribbean, particularly Chile, where it is quite a common boy's name, Paraguay, where it is quite a rare male name, and Uruguay, where it is a rare male name. In absolute terms, it is commonest in Latin America and the Caribbean, particularly Chile, Argentina, and Paraguay. Very seldom, Matias Sebastian is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Matias Sebastian | Paraguay, Argentina, Spain, Chile, Ecuador |