Family name Ullendorff (Ullendorff 
) , around the globe, is an extremely rare surname. The family name Ullendorff is habitual in the United Kingdom, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Ullendorff | United Kingdom, United States |
| edward ullendorff British scholar and historian, GB (b. 1920) |
|