| اردو | urd-000 |
| ناورو | |
| Afrikaans | afr-000 | Naoeroe |
| Afrikaans | afr-000 | Nauru |
| toskërishte | als-000 | Naurua |
| العربية | arb-000 | ناورو |
| العربية | arb-000 | نورو |
| luenga aragonesa | arg-000 | Nauru |
| ISO 3166 alpha | art-006 | NR |
| مصري | arz-000 | ناورو |
| asturianu | ast-000 | Nauru |
| беларуская | bel-000 | Науру |
| বাংলা | ben-000 | নাউরু |
| bosanski | bos-000 | Nauru |
| বিষ্ণুপ্রিয়া মণিপুরী ভাষা | bpy-000 | নাউরু |
| brezhoneg | bre-000 | Nauru |
| brezhoneg | bre-000 | Republik Nauru |
| български | bul-000 | Науру |
| català | cat-000 | Nauru |
| binisayang Sinugboanon | ceb-000 | Nauru |
| čeština | ces-000 | Nauru |
| čeština | ces-000 | Nauru-state |
| 普通话 | cmn-000 | 瑙鲁 |
| 國語 | cmn-001 | 諾魯 |
| Kernowek | cor-000 | Nauru |
| Qırımtatar tili | crh-000 | Nauru |
| Cymraeg | cym-000 | Nauru |
| Cymraeg | cym-000 | Nawrw |
| dansk | dan-000 | Nauru |
| Deutsch | deu-000 | Nauru |
| Deutsch | deu-000 | Republik Nauru |
| Zazaki | diq-000 | Nauru |
| ދިވެހިބަސް | div-000 | ނައުރޫ |
| eesti | ekk-000 | Nauru |
| ελληνικά | ell-000 | Ναουρού |
| ελληνικά | ell-000 | Ναούρου |
| English | eng-000 | Nauru |
| English | eng-000 | Republic of Nauru |
| Esperanto | epo-000 | Nauro |
| Esperanto | epo-000 | nauro |
| euskara | eus-000 | Nauru |
| føroyskt | fao-000 | Nauru |
| suomi | fin-000 | Nauru |
| français | fra-000 | Nauru |
| lenga arpitana | frp-000 | Naouru |
| Frysk | fry-000 | Naurû |
| Gàidhlig | gla-000 | Nauru |
| Gaeilge | gle-000 | Nárú |
| galego | glg-000 | Nauru |
| galego | glg-000 | Nauru - Naoero |
| yn Ghaelg | glv-000 | Naaroo |
| Schwizerdütsch | gsw-000 | Nauru |
| kreyòl ayisyen | hat-000 | Naorou |
| Srpskohrvatski | hbs-001 | Nauru |
| עברית | heb-000 | נאורו |
| हिन्दी | hin-000 | नाउरु |
| hrvatski | hrv-000 | Nauru |
| magyar | hun-000 | Nauru |
| արևելահայերեն | hye-000 | Յարեն |
| արևելահայերեն | hye-000 | Նաուրու |
| Ido | ido-000 | Nauru |
| interlingua | ina-000 | Nauru |
| bahasa Indonesia | ind-000 | Nauru |
| íslenska | isl-000 | Nárú |
| italiano | ita-000 | Nauru |
| basa Jawa | jav-000 | Nauru |
| 日本語 | jpn-000 | ナウル |
| Kĩkamba | kam-000 | Nauru |
| kạ̄šur | kas-002 | Nauru |
| ქართული | kat-000 | ნაურუ |
| қазақ | kaz-000 | Науру |
| ភាសាខ្មែរ | khm-000 | ណូរុ |
| Gĩkũyũ | kik-000 | Nauru |
| Kalenjin | kln-000 | Nauru |
| Kurmancî | kmr-000 | Naûrû |
| 한국어 | kor-000 | 나우루 |
| Kölsch | ksh-000 | Nauru |
| latine | lat-000 | Naurum |
| latine | lat-000 | Nauruna Insula |
| lengua lígure | lij-000 | Nauru |
| Limburgs | lim-000 | Naoeroe |
| lietuvių | lit-000 | Nauru |
| Lëtzebuergesch | ltz-000 | Nauru |
| Dholuo | luo-000 | Nauru |
| Oluluyia | luy-000 | Nauru |
| latviešu | lvs-000 | Nauru |
| മലയാളം | mal-000 | നൗറു |
| मराठी | mar-000 | नौरू |
| Kĩmĩrũ | mer-000 | Nauru |
| македонски | mkd-000 | Науру |
| Malti | mlt-000 | Nauru |
| Malti | mlt-000 | Nawru |
| reo Māori | mri-000 | Nauru |
| Bân-lâm-gú | nan-005 | Nauru |
| dorerin Naoero | nau-000 | Naoero |
| Nāhuatlahtōlli | nci-000 | Nauru |
| Plattdüütsch | nds-000 | Nauru |
| Plattdüütsch-Neddersassisch | nds-002 | Nauru |
| नेपाल भाषा | new-000 | नाउरु |
| Nederlands | nld-000 | Nauru |
| nynorsk | nno-000 | Nauru |
| bokmål | nob-000 | Nauru |
| occitan | oci-000 | Nauru |
| ирон ӕвзаг | oss-000 | Науру |
| Amanung Sisuan | pam-000 | Nauru |
| پښتو ژبه | pbu-000 | ناورو |
| فارسی | pes-000 | نائورو |
| lenga piemontèisa | pms-000 | Nauru |
| polski | pol-000 | Nauru |
| português | por-000 | Nauru |
| Runa Simi | que-000 | Nawru |
| Qusqu qhichwa simi | quz-000 | Nawru |
| lingua rumantscha | roh-000 | Nauru |
| română | ron-000 | Nauru |
| limba armãneascã | rup-000 | Nauru |
| русский | rus-000 | Науру |
| संस्कृतम् | san-000 | नौरु |
| lingua siciliana | scn-000 | Nauru |
| Žemaitiu | sgs-000 | Nauru |
| slovenčina | slk-000 | Nauru |
| slovenčina | slk-000 | Nauruská republika |
| slovenščina | slv-000 | Nauru |
| davvisámegiella | sme-000 | Nauru |
| gagana faʻa Samoa | smo-000 | Nauru |
| español | spa-000 | Nauru |
| shqip | sqi-000 | Naurua |
| српски | srp-000 | Науру |
| srpski | srp-001 | Nauru |
| svenska | swe-000 | Nauru |
| Kiswahili | swh-000 | Nauru |
| தமிழ் | tam-000 | நவூரு |
| тоҷикӣ | tgk-000 | Науру |
| Tagalog | tgl-000 | Nauru |
| ภาษาไทย | tha-000 | นาอูรู |
| ภาษาไทย | tha-000 | ประเทศนาอูรู |
| ภาษาไทย | tha-000 | สาธารณรัฐนาอูรู |
| Tok Pisin | tpi-000 | Nauru |
| Türkçe | tur-000 | Nauru |
| Uyghurche | uig-001 | Nawru |
| українська | ukr-000 | Науру |
| oʻzbek | uzn-000 | Nauru |
| tiếng Việt | vie-000 | Nauru |
| Volapük | vol-000 | Naureän |
| Winaray | war-000 | Nauru |
| kàllaama wolof | wol-000 | Nauru |
| 廣東話 | yue-000 | 瑙魯 |
| 原中国 | zho-000 | 瑙鲁 |
| Bahasa Malaysia | zsm-000 | Nauru |