Surname Duczkowski-Oxley (Duczkowski-Oxley 
) , across the world, is an extremely rare cognomen. The surname Duczkowski-Oxley is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a first name Duczkowski, and a last name Oxley.
| VARIANT | COUNTRY |
|---|---|
| Duczkowski-Oxley | United States |