Cognomen דיטריך (Dietrich 
, Ditrih 
, דיטריך 
) , across the world, is a common family name. The surname דיטריך is habitual in Western Europe, particularly Germany, where it is quite a common surname, Liechtenstein, and Switzerland (explore the name in all countries). In absolute terms, the name is most common in Germany, the United States, and France. Also, דיטריך is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dietrich | Brazil, France, Germany, United States, Switzerland |
| Ditrih | Australia, Argentina, Brazil, Germany, United States |
| דיטריך | Israel |