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Last name Smullen (Smullen
) , worldwide, is quite a rare surname. The surname Smullen 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 is commonest in the United States, Ireland, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Smullen | Canada, Australia, United States, United Kingdom, Ireland |