Worldwide, สุมาตร (สุมาตร 
) is a rare unisex forename. The first name สุมาตร is characteristic of South-eastern Asia, particularly Thailand, where it is a rare unisex name. Very seldom, สุมาตร is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| สุมาตร | Thailand |