Cognomen Dematos (Dematos 
) , around the globe, is a rare surname. The last name Dematos is characteristic of France, where it is a rare surname, Portugal, and Canada. In absolute terms, it most frequently occurs in the United States, France, and Canada. Much less frequently, Dematos is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dematos | Australia, Canada, France, Brazil, United States |