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Family name Oleary (Oleary
) , across the world, is a common cognomen. The last name Oleary is habitual in Ireland, where it is quite a common surname, the United States, where it is quite a rare surname, and New Zealand. In absolute terms, this name is the most popular in the United States, the United Kingdom, and Ireland.
| VARIANT | COUNTRY |
|---|---|
| Oleary | Canada, Australia, United States, United Kingdom, Ireland |