Cognomen Deifuss (Deifuss 
) , throughout the world, is a very rare surname. The cognomen Deifuss is habitual in Germany, where it is a very rare surname, South Africa, where it is an extremely rare surname, and the United Kingdom. Very seldom, Deifuss is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Deifuss | United Kingdom, Germany, South Africa, Spain, United States |