Family name Karl Anton (Karl Anton 
) , globally, is an extremely rare last name. The surname Karl Anton is habitual in Western Europe, particularly Switzerland, where it is a very rare surname. Much more frequently, Karl Anton is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karl Anton | Germany, Sweden, Spain, Philippines, Switzerland |
Carl Anton, Carlo Antonio, Carlos Antonio, Carlos António, Charles Anthony, and Charles-Antoine