Last name Troos (Troos 
) , in the world, is a very rare family name. The last name Troos is characteristic of Belgium, where it is a rare surname, Norway, where it is a very rare surname, and Denmark. Very seldom, Troos is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Troos | Norway, Denmark, Belgium, South Africa |