Family name Rosmarlyn (Rosmarlyn 
) , in the world, is a very rare last name. The surname Rosmarlyn is characteristic of Venezuela, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Rosmarlyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rosmarlyn | Dominican Republic, Philippines, Venezuela, United States |