All around the world, Николаос (Nikolaos 
, Νικόλαος , Николаос 
) is a widespread masculine first name. The first name Николаос is habitual in Greece, where it is a prevalent boy's name, Cyprus, where it is quite a rare male name, and Germany. In absolute terms, it is commonest in Greece, Germany, and the United States. Also, Николаос is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Nikolaos | Germany, United Kingdom, Italy, United States, Greece |
| Νικόλαος | Greece |
| Николаос | Russia, Ukraine |
Miklavž, Miklos, Miklós, Mikola, Mikołaj, Mikuláš, Mikławš, Mykola, Mykoła, Niccolò, Nicholas, Nickel, Nicolaas, Nicolae, Nicolaes, Nicolaos, Nicolas, Nicolau, Nicolaus, Nicolino, Nicolo, Nicolás, Nicolò, Nicos, Niels, Niilo, Niko, Nikola, Nikolai, Nikolai, Nikolaj, Nikolaj, Nikolajs, Nikolajus, Nikolao, Nikolas, Nikolass, Nikolaus, Nikolay, Nikolaz, Nikolaï, Nikos, Nikołaj, Nikulás, Nils, Nyikolaj, Nykolaos, Νίκολας, Νίκος, Νικολάου, Νικόλας,
Николаос is also a prevalent name for the fictitious and mythical characters: Nick Wilde , the Zootopia character; Nick Fury , the fictional character from the Marvel Cinematic Universe, Avengers: Infinity War; Michael Darling , the fictional character from Peter Pan; Nearly Headless Nick , character in Harry Potter and Nicholas Brody , the fictional character on the American television/drama thriller Homeland, and in many other works.
Зыгоурис, Сидиропоулос, Попадопулос, Леонидис, Феофилиди, Багларидис, Матсоукатидис, Костидис, Хрисидис, Килидис, Легносов, Колиос, Цапикунис, Тзиоумакис, Пагиагкасов, Аноихас, Трикалинос, and Антониадис