Cognomen Neculai (Neculai 
, نيكولاي 
) , worldwide, is quite a common surname. The cognomen Neculai is habitual in Romania, where it is quite a common surname, Albania, where it is quite a rare surname, and Afghanistan, where it is a rare surname. Not in comparison with a country's population, the name is most common in Romania, Italy, and Afghanistan. Also, Neculai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Neculai | Romania, Italy, Spain, Afghanistan, Greece |
| نيكولاي | Yemen, Palestinian Territory, Iraq |
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viorica neculai Romanian rower, RO (b. 1967) |
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| ana mirela neculai researcher |
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| dante neculai researcher |
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| octavian neculai Romanian set designer, RO |
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| ion neculai Italian rugby union player |
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