Last name ソウト (Souto 
, ソウト 
) , all over the world, is a common cognomen. The surname ソウト is habitual in Portugal, where it is quite a common surname, Uruguay, and Brazil (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Brazil, Argentina, and Spain. Very seldom, ソウト is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Souto | Portugal, Spain, Uruguay, Argentina, Brazil |
| ソウト | Japan |