Cognomen دوفى (Duffy 
, Duffey , دوفى) , around the world, is a common surname. The cognomen دوفى is characteristic of Ireland, where it is a common surname, New Zealand, where it is quite a common surname, and Jersey (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and Ireland. Very seldom, دوفى is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duffy, Duffey | Australia, Canada, Ireland, United Kingdom, United States |