Cognomen Rosmith (Rosmith 
) , all over the world, is an extremely rare last name. The last name Rosmith is characteristic of Venezuela, where it is an extremely rare surname, and the United States. Much more prevalently, Rosmith is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rosmith | Democratic Republic of the Congo, India, Peru, United States, Colombia |