Cognomen Casio-Smith (Casio-Smith 
) , in the entire world, is an extremely rare last name. The surname Casio-Smith is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Casio, and a last name Smith.
| VARIANT | COUNTRY |
|---|---|
| Casio-Smith | United States |