Family name גראדל (Gradel 
, גראדל 
) , in the world, is quite a rare last name. The cognomen גראדל is habitual in Switzerland, where it is quite a rare surname, Ivory Coast, and France, where it is a rare surname. In absolute terms, this name is the most popular in France, Switzerland, and the United States. Much less frequently, גראדל is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gradel | Germany, Ivory Coast, France, United States, Switzerland |
| גראדל | Israel |