Globally, Sebastial (Sebastial 
) is a very rare dominantly boy's, but uncommonly female given name. The forename Sebastial is habitual in Eastern Europe, particularly Czechia, where it is a rare boy's name. Very seldom, Sebastial is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sebastial | Czechia, Spain, Malaysia, India, Brazil |