Cognomen Oneil-Dunne (Oneil-Dunne 
) , around the globe, is an extremely rare family name. The family name Oneil-Dunne 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 last name Oneil, and a last name Dunne.
| VARIANT | COUNTRY |
|---|---|
| Oneil-Dunne | United States |