Worldwide, Neculai (Neculai 
, نيكولاي 
) is quite a common male given name. The given name Neculai is characteristic of Romania, where it is quite a common masculine name, Greece, where it is quite a rare boy's name, and Italy, where it is a rare masculine name. Also, Neculai is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Neculai | Romania, Italy, Spain, Afghanistan, Greece |
| نيكولاي | Yemen, Palestinian Territory, Iraq |
Neculai is also a name for the fictitious and mythical characters: Nicolae Carpathia , the fictional character.
| neculai greceanu (b. 1793) |
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| neculai rosetti-roznovanu (b. 1794) |
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neculai costăchescu Romanian chemist and politician (1876-1939), RO (b. 1876) |
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| neculai ștefan botez Romanian mathematician, RO (b. 1843) |
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neculai macarovici RO (b. 1902) |
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| neculai rosetti-balanescu father of Constantin Rosetti-Balanescu, RO (b. 1865) |
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neculai onțanu Romanian politician, RO (b. 1949) |
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neculai vasilcă Romanian handball player, RO (b. 1955) |
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| neculai ghimpu RO (b. 1912) |
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| neculai alexandru ursu Romanian linguist, philologist and literary historian, RO (b. 1926) |
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| neculai agachi RO (b. 1925) |
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| neculai chivu politician (b. 1938) |
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| neculai asandei RO (b. 1928) |
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| neculai rățoi Romanian politician, Mayor of Pașcani (1981–2008), RO (b. 1939) |
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| neculai munteanu Romanian journalist, RO (b. 1941) |
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