All around the world, Thomas-Sven (Thomas-Sven 
) is a very rare male forename. The first name Thomas-Sven is habitual in Western Europe, particularly Germany, where it is a very rare masculine name. Very seldom, Thomas-Sven is the last name as well as the forename. Parts of the name also exists independently as a first name Thomas, and a first name Sven.
| VARIANT | COUNTRY |
|---|---|
| Thomas-Sven | Germany, Chile |
Heidmeier, and Hopfenblatt