| Zeêuws | zea-000 |
| Niue | |
| العربية | arb-000 | نييوي |
| luenga aragonesa | arg-000 | Niue |
| asturianu | ast-000 | Niue |
| беларуская | bel-000 | Ніўэ |
| bosanski | bos-000 | Niue |
| বিষ্ণুপ্রিয়া মণিপুরী ভাষা | bpy-000 | নুউ |
| български | bul-000 | Ниуе |
| català | cat-000 | Niue |
| čeština | ces-000 | Niue |
| 國語 | cmn-001 | 紐埃 |
| Kernowek | cor-000 | Niue |
| Cymraeg | cym-000 | Niue |
| dansk | dan-000 | Niue |
| Deutsch | deu-000 | Niue |
| ދިވެހިބަސް | div-000 | ނީއު |
| eesti | ekk-000 | Niue |
| ελληνικά | ell-000 | Νιούε |
| English | eng-000 | Niue |
| Esperanto | epo-000 | Niuo |
| euskara | eus-000 | Niue |
| suomi | fin-000 | Niue |
| français | fra-000 | Nioué |
| lenga arpitana | frp-000 | Niuè |
| Faka Futuna | fud-000 | Niue |
| Gàidhlig | gla-000 | Niue |
| Gaeilge | gle-000 | Niue |
| galego | glg-000 | Niue |
| Srpskohrvatski | hbs-001 | Niue |
| עברית | heb-000 | ניואה |
| עברית | heb-000 | ניווה |
| hrvatski | hrv-000 | Niue |
| magyar | hun-000 | Niue |
| Ido | ido-000 | Niue |
| bahasa Indonesia | ind-000 | Niue |
| íslenska | isl-000 | Niue |
| italiano | ita-000 | Niue |
| 日本語 | jpn-000 | ニウエ |
| қазақ | kaz-000 | Ниуе |
| Kurmancî | kmr-000 | Niûe |
| 한국어 | kor-000 | 니우에 |
| latine | lat-000 | Niue |
| lengua lígure | lij-000 | Niue |
| lietuvių | lit-000 | Niujė |
| latviešu | lvs-000 | Niue |
| Bân-lâm-gú | nan-005 | Niue |
| Nederlands | nld-000 | Niue |
| bokmål | nob-000 | Niue |
| ирон ӕвзаг | oss-000 | Ниуэ |
| فارسی | pes-000 | نیووی |
| lenga piemontèisa | pms-000 | Niue |
| polski | pol-000 | Niue |
| português | por-000 | Niue |
| română | ron-000 | Niue |
| русский | rus-000 | Ниуэ |
| slovenčina | slk-000 | Niue |
| slovenščina | slv-000 | Niue |
| davvisámegiella | sme-000 | Niue |
| español | spa-000 | Niue |
| српски | srp-000 | Нијуе |
| svenska | swe-000 | Niue |
| Kiswahili | swh-000 | Niue |
| தமிழ் | tam-000 | நியுவே |
| ภาษาไทย | tha-000 | นีอูเอ |
| Türkçe | tur-000 | Niue |
| Uyghurche | uig-001 | Niué Arili |
| українська | ukr-000 | Ніуе |
| tiếng Việt | vie-000 | Niue |
| Winaray | war-000 | Niue |
| Fakaʻuvea | wls-000 | Niue |
| kàllaama wolof | wol-000 | Niwe |
| Bahasa Malaysia | zsm-000 | Niue |