Family name Nikulásson (Nikulásson 
) , globally, is a very rare cognomen. The cognomen Nikulásson is habitual in Northern Europe, particularly Iceland, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Nikulásson | Iceland |
| gottskálk grimmi nikulásson Icelandic bishop, IS (b. 1469) |
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| axel nikulásson icelandic basketball player, IS (b. 1962) |
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| gottskálk nikulásson Roman Catholic bishop |
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| pétur nikulásson Roman Catholic bishop |
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| tómas nikulásson |
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| pétur nikulásson |
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Sveinn, Róbert, and Sveinbjörn