Family name Nualláin (Nualláin 
) , throughout the world, is a very rare surname. The family name Nualláin is characteristic of Northern Europe, particularly Ireland, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Nualláin | Ireland |
| gearóid ó nualláin Irish scholar and priest (1874–1942), IE (b. 1874) |
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| ciarán ó nualláin (b. 1910) |
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alan ó nualláin Irish hurler, IE (b. 1985) |
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| m.j. ó nualláin Irish politician, IE (b. 1951) |
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| criostóir ó nualláin Irish hurler (b. 1990) |
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| eiméid ó nualláin Irish hurler, IE (b. 1995) |
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