Surname Ruem (Ruem 
) , around the world, is a very rare cognomen. The surname Ruem is characteristic of Malaysia, where it is a rare surname, Brazil, where it is an extremely rare surname, and Mexico. Measured by absolute frequency, it most frequently occurs in Malaysia, Brazil, and the United States. Likewise, Ruem is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ruem | Australia, Malaysia, Thailand, Philippines, Brazil |