Family name Roenberg (Roenberg 
) , across the world, is a rare cognomen. The family name Roenberg is characteristic of Denmark, where it is quite a rare surname, Norway, where it is a rare surname, and Czechia. Measured by absolute frequency, this name is the most popular in Denmark, Poland, and Czechia.
| VARIANT | COUNTRY |
|---|---|
| Roenberg | Denmark, Poland, Czechia, Switzerland, Norway |