Family name Calcea (Kaus 
, Kous 
, Calcea 
) , across the world, is quite a common surname. The cognomen Calcea is habitual in Estonia, where it is quite a common surname, Slovenia, where it is quite a rare surname, and Moldova. In absolute terms, it most frequently occurs in Germany, the United States, and the Democratic Republic of the Congo. Much less frequently, Calcea is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaus | Germany, Poland, United States, India, Malaysia |
| Kous | Austria, United States, India, Democratic Republic of the Congo, Algeria |
| Calcea | Romania, Moldova, France, Italy, United States |