Worldwide, Nelson Sebastian (Nelson Sebastian 
) is a rare boy's forename. The first name Nelson Sebastian is habitual in Latin America and the Caribbean, particularly Chile, where it is quite a rare male name, and Argentina, where it is a very rare boy's name. Very seldom, Nelson Sebastian is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Nelson Sebastian | Peru, Ecuador, Chile, Argentina |