Cognomen Niculae (Niculae 
, نيكولاي 
, 尼古拉 
) , all over the world, is a common last name. The surname Niculae is characteristic of Romania, where it is a common surname, Malta, where it is quite a rare surname, and Luxembourg. Not in comparison with a country's population, it most frequently occurs in Romania, Afghanistan, and Spain. Likewise, Niculae is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Niculae | Spain, Italy, France, Afghanistan, Romania |
| نيكولاي | Iraq, Yemen, Palestinian Territory |
| 尼古拉 | China |
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niculae nedeff Olympic handball player (1928-2017), RO (b. 1928) |
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| niculae m. popescu Romanian historian, RO (b. 1881) |
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niculae spiroiu Romanian general, RO (b. 1936) |
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ioan niculae Romanian businessman, RO (b. 1954) |
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| niculae cantonieru Romanian author (1899-1935), RO (b. 1905) |
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| niculae i. herescu RO (b. 1903) |
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| niculae frânculescu Romanian writer, RO (b. 1925) |
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| vasile constantin ionescu-galbeni niculae Romanian politician, RO (b. 1926) |
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| niculae florea (b. 1921) |
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daniel niculae Romanian footballer, RO (b. 1982) |
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| niculae ionescu Romanian chemist, RO (b. 1933) |
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| niculae cerveni RO (b. 1926) |
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| niculae gheran RO (b. 1929) |
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| niculae micu (b. 1933) |
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| niculae florian (b. 1936) |
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