Surname Siw-Therese (Siw-Therese 
) , in all the world, is an extremely rare last name. Much more prevalently, Siw-Therese is the forename as well as the last name. Parts of the name also exists independently as a first name Siw, and a first name Therese.
| VARIANT | COUNTRY |
|---|---|
| Siw-Therese | Norway |