Cognomen Southy (Southy 
) , all over the world, is a very rare last name. The cognomen Southy is characteristic of Laos, where it is a rare surname, Australia, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. In absolute terms, it is commonest in Laos, the United States, and Australia. Very seldom, Southy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Southy | United Kingdom, Australia, South Africa, United States, Laos |