Cognomen Oflaherty (Oflaherty 
) , in the world, is quite a rare surname. The last name Oflaherty is characteristic of Ireland, where it is quite a rare surname, Australia, where it is a rare surname, and the United Kingdom. Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Ireland.
| VARIANT | COUNTRY |
|---|---|
| Oflaherty | United Kingdom, Ireland, Australia, Afghanistan, United States |