Family name Samnual (Samnual 
) , globally, is a very rare cognomen. The surname Samnual is habitual in Thailand, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Much less frequently, Samnual is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Samnual | United States, Thailand, Nigeria |