Surname دنكر (Duncker 
, دنكر) , across the world, is quite a rare last name. The cognomen دنكر is habitual in Belize, where it is quite a common surname, Finland, where it is quite a rare surname, and Germany, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Germany, the United States, and Netherlands.
| VARIANT | COUNTRY |
|---|---|
| Duncker | Finland, Netherlands, South Africa, Germany, United States |