| Deutsch | deu-000 |
| Niklas | |
| български | bul-000 | Никола |
| български | bul-000 | Николай |
| català | cat-000 | Micolau |
| català | cat-000 | Nicolau |
| čeština | ces-000 | Mikuláš |
| dansk | dan-000 | Niclas |
| dansk | dan-000 | Nicolai |
| dansk | dan-000 | Niels |
| dansk | dan-000 | Nikolai |
| dansk | dan-000 | Nikolaj |
| Deutsch | deu-000 | Klaus |
| Deutsch | deu-000 | Nikolaus |
| eesti | ekk-000 | Niguliste |
| ελληνικά | ell-000 | Νίκο |
| ελληνικά | ell-000 | Νίκος |
| ελληνικά | ell-000 | Νικόλαος |
| English | eng-000 | Nic |
| English | eng-000 | Nicholas |
| English | eng-000 | Nick |
| English | eng-000 | Nickolas |
| English | eng-000 | Nicky |
| English | eng-000 | Nicolas |
| English | eng-000 | Nikolas |
| Esperanto | epo-000 | Nikolao |
| suomi | fin-000 | Nikolaus |
| français | fra-000 | Colas |
| français | fra-000 | Colin |
| français | fra-000 | Nicolas |
| Gàidhlig | gla-000 | Nicol |
| Gaeilge | gle-000 | Níoclas |
| hrvatski | hrv-000 | Nikola |
| magyar | hun-000 | Miklós |
| íslenska | isl-000 | Nikulás |
| italiano | ita-000 | Nicola |
| 日本語 | jpn-000 | ニコラ |
| ქართული | kat-000 | ნიკოლოზ |
| latine | lat-000 | Nicolaus |
| lietuvių | lit-000 | Mikalojus |
| lietuvių | lit-000 | Mikas |
| Plattdüütsch-Neddersassisch | nds-002 | Nickel |
| Nederlands | nld-000 | Nico |
| Nederlands | nld-000 | Nicolaas |
| Nederlands | nld-000 | Niels |
| nynorsk | nno-000 | Nikolaus |
| bokmål | nob-000 | Nikolaus |
| bokmål | nob-000 | Nils |
| polski | pol-000 | Mikołaj |
| polski | pol-000 | Mikołajek |
| polski | pol-000 | Mikuś |
| português | por-000 | Nicolas |
| português | por-000 | Nicolau |
| română | ron-000 | Nicolae |
| русский | rus-000 | Николай |
| slovenčina | slk-000 | Mikuláš |
| español | spa-000 | Nico |
| español | spa-000 | Nicolás |
| sardu | srd-000 | Nigola |
| српски | srp-000 | Никола |
| svenska | swe-000 | Nicklas |
| svenska | swe-000 | Niclas |
| svenska | swe-000 | Niklas |
| svenska | swe-000 | Nils |
| українська | ukr-000 | Микола |