Cognomen Niculas (Niculas 
) , in all the world, is a rare last name. The surname Niculas is habitual in Romania, where it is a rare surname, Italy, where it is a very rare surname, and Malaysia. Measured by absolute frequency, this name is the most popular in Romania, Nigeria, and the United States. Likewise, Niculas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Niculas | Brazil, Senegal, Philippines, United States, Romania |