Cognomen Casmer (Casmer 
) , worldwide, is a rare family name. The surname Casmer is characteristic of Chile, where it is a rare surname, the United States, where it is a very rare surname, and Canada. Not in comparison with a country's population, it most frequently occurs in the United States, Chile, and Nigeria. More prevalently, Casmer is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Casmer | Canada, Philippines, Chile, United States, Nigeria |