Family name Sounantha (Sounantha 
) , globally, is a rare last name. The family name Sounantha is characteristic of Laos, where it is quite a rare surname, New Zealand, where it is a very rare surname, and Australia. Measured by absolute frequency, it is commonest in Laos, the United States, and Australia. Also, Sounantha is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sounantha | Australia, Canada, Thailand, Laos, United States |