Surname Sumantara (Sumantara 
) , throughout the world, is a rare last name. The family name Sumantara is characteristic of Indonesia, where it is a rare surname, Australia, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, Sumantara is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sumantara | India, Australia, Indonesia |