| English | eng-000 |
| Niger | |
| Afrikaans | afr-000 | Niger |
| Aghem | agq-000 | Naedzà |
| ܐܬܘܪܝܐ | aii-000 | ܢܝܓܪ |
| Akan | aka-000 | Nigyɛ |
| toskërishte | als-000 | Niger |
| toskërishte | als-000 | Nigeri |
| አማርኛ | amh-000 | ኒጀር |
| አማርኛ | amh-000 | ኒጄር |
| العربية | arb-000 | النيجر |
| العربية | arb-000 | النيجِر |
| العربية | arb-000 | اَلنِّيجَر |
| العربية | arb-000 | جمهورية النيجر |
| العربية | arb-000 | نيجر |
| العربية | arb-000 | نيجِر |
| Classical Arabic—ASJP | arb-001 | Nīǧir |
| ארמית | arc-000 | ܢܝܓܪ |
| luenga aragonesa | arg-000 | Nícher |
| ISO 3166 alpha | art-006 | NE |
| ISO 3166 alpha | art-006 | NER |
| Toki Pona | art-007 | ma Nise |
| Romániço | art-013 | niger |
| Romániço | art-013 | nígero |
| Universal Networking Language | art-253 | niger(iof>african_country>thing) |
| Universal Networking Language | art-253 | niger(iof>river>thing) |
| UN M.49 | art-279 | 562 |
| Codes des pays, zones et régions | art-293 | 562 |
| UNDP Country Codes | art-294 | NER |
| FAO Country Code | art-296 | 158 |
| GAUL Country Codes | art-297 | 181 |
| ISO 3166-2 | art-416 | NG-NI |
| مصري | arz-000 | النايجر |
| Kipare | asa-000 | Nijeri |
| asturianu | ast-000 | El Níxer |
| asturianu | ast-000 | Níxer |
| azərbaycanca | azj-000 | Niger |
| Азәрбајҹан дили | azj-001 | Ниҝер |
| bamanankan | bam-000 | Jeliba |
| bamanankan | bam-000 | Niger |
| bamanankan | bam-000 | Nijer |
| bamanankan | bam-000 | Nizɛri |
| ɓàsàa | bas-000 | Nìjɛ̂r |
| беларуская | bel-000 | Нігер |
| тарашкевіца | bel-001 | Нігер |
| বাংলা | ben-000 | নাইজার |
| Ekibena | bez-000 | Hunijeli |
| بلوچی | bgn-003 | نیجیر |
| བོད་སྐད་ | bod-000 | ནའི་ཇར། |
| bosanski | bos-000 | Niger |
| босански | bos-001 | Нигер |
| বিষ্ণুপ্রিয়া মণিপুরী ভাষা | bpy-000 | নাইজের |
| brezhoneg | bre-000 | Niger |
| बरʼ | brx-000 | नाइजेर |
| български | bul-000 | Нигер |
| bălgarski ezik | bul-001 | Niger |
| català | cat-000 | Níger |
| binisayang Sinugboanon | ceb-000 | Niger |
| čeština | ces-000 | Niger |
| čeština | ces-000 | Niger-state |
| čeština | ces-000 | Nigerská republika |
| Rukiga | cgg-000 | Naigya |
| нохчийн мотт | che-000 | Нигер |
| ᏣᎳᎩ ᎧᏬᏂᎯᏍᏗ | chr-000 | ᎾᎢᏨ |
| سۆرانی | ckb-000 | نیجەر |
| 普通话 | cmn-000 | 尼日尔 |
| 普通话 | cmn-000 | 尼日尔共和国 |
| 普通话 | cmn-000 | 尼日尔河 |
| 國語 | cmn-001 | 尼日 |
| 國語 | cmn-001 | 尼日爾 |
| Hànyǔ | cmn-003 | Ní rì er |
| Hànyǔ | cmn-003 | Nírìěr |
| Hànyǔ | cmn-003 | Nírìěr hé |
| 香港官話 | cmn-021 | 尼日爾 |
| Kernowek | cor-000 | Pow Nijer |
| Qırımtatar tili | crh-000 | Niger |
| Cymraeg | cym-000 | Niger |
| Cymraeg | cym-000 | Nijer |
| dansk | dan-000 | Niger |
| Kitaita | dav-000 | Nijeri |
| Deutsch | deu-000 | Niger |
| Deutsch | deu-000 | Republik Niger |
| Zazaki | diq-000 | Nicer |
| ދިވެހިބަސް | div-000 | ނިޖަރު |
| zarmaciine | dje-000 | Nižer |
| zarmaciine | dje-000 | niizeer laabo |
| zarmaciine | dje-000 | niizeer laabu |
| zarmaciine | dje-000 | niizeeru |
| zarmaciine | dje-000 | nizeer |
| dolnoserbska reč | dsb-000 | Niger |
| རྫོང་ཁ་ | dzo-000 | ནཱའི་ཇཱ |
| Kĩembu | ebu-000 | Nijeri |
| eesti | ekk-000 | Niger |
| eesti | ekk-000 | Nigeri jõgi |
| ελληνικά | ell-000 | Δημοκρατία του Νίγηρα |
| ελληνικά | ell-000 | Νίγηρ |
| ελληνικά | ell-000 | Νίγηρας |
| English | eng-000 | Niger River |
| English | eng-000 | Republic of Niger |
| English | eng-000 | Republic of the Niger |
| English | eng-000 | the Niger |
| English | eng-000 | the Republic of the Niger |
| 𐐀𐑍𐑊𐐮𐑇 | eng-006 | 𐐤𐐴𐐾𐐲𐑉 |
| Esperanto | epo-000 | Niĝerio |
| Esperanto | epo-000 | Niĝerlando |
| Esperanto | epo-000 | Niĝero |
| Esperanto | epo-000 | niĝero |
| euskara | eus-000 | Niger |
| Ɛʋɛgbɛ | ewe-000 | Niger nutome |
| ewondo | ewo-000 | Nihɛ́r |
| føroyskt | fao-000 | Niger |
| Wikang Filipino | fil-000 | Niger |
| suomi | fin-000 | Niger |
| suomi | fin-000 | Niger-joki |
| suomi | fin-000 | Nigerin tasavalta |
| français | fra-000 | Niger |
| français | fra-000 | République du Niger |
| français | fra-000 | la République du Niger |
| français | fra-000 | le Niger |
| lenga arpitana | frp-000 | Nig·èr |
| Frysk | fry-000 | Niger |
| Pulaar | fuc-000 | Nijeer |
| Fulfulde | ful-000 | Nijeer |
| lenghe furlane | fur-000 | Niger |
| Gàidhlig | gla-000 | Niger |
| Gàidhlig | gla-000 | Nìgeir |
| Gaeilge | gle-000 | An Nígir |
| Gaeilge | gle-000 | Nígir |
| Gaeilge | gle-000 | Poblacht na Nígire |
| Gaeilge | gle-000 | an Nígir |
| galego | glg-000 | Níxer |
| yn Ghaelg | glv-000 | Yn Neegeyr |
| yn Ghaelg | glv-000 | yn Neegeyr |
| ἑλληνικὴ γλῶττα | grc-000 | Νίγερ |
| Schwizerdütsch | gsw-000 | Niger |
| ગુજરાતી | guj-000 | નાઇજર |
| Ekegusii | guz-000 | Nijeri |
| kreyòl ayisyen | hat-000 | Nijè |
| Hausa | hau-000 | Nijar |
| Hausa | hau-000 | kwara |
| Српскохрватски | hbs-000 | Нигер |
| Srpskohrvatski | hbs-001 | Niger |
| עברית | heb-000 | ניז'ר |
| עברית | heb-000 | ניז׳ר |
| ISO 259-3 | heb-001 | Niz'er |
| fiji hindi | hif-000 | Niger |
| हिन्दी | hin-000 | काला आदमी |
| हिन्दी | hin-000 | नाइगर |
| हिन्दी | hin-000 | नाइजर |
| हिन्दी | hin-000 | नाइजर गणराज्य |
| हिन्दी | hin-000 | नीजे |
| हिन्दी | hin-000 | नीजेर |
| हिन्दी | hin-000 | हब्शी |
| hrvatski | hrv-000 | Niger |
| hornjoserbšćina | hsb-000 | Niger |
| magyar | hun-000 | Niger |
| magyar | hun-000 | Niger Köztársaság |
| արևելահայերեն | hye-000 | Նիգեր |
| asụsụ Igbo | ibo-000 | Niger |
| asụsụ Igbo | ibo-000 | Òrìmili |
| Ido | ido-000 | Nijer |
| Interlingue | ile-000 | Niger |
| interlingua | ina-000 | Niger |
| bahasa Indonesia | ind-000 | Niger |
| bahasa Indonesia | ind-000 | Sungai Niger |
| íslenska | isl-000 | Níger |
| íslenska | isl-000 | Nígerfljót |
| italiano | ita-000 | Niger |
| italiano | ita-000 | Repubblica del Niger |
| italiano | ita-000 | Repubblica di Nigeria |
| basa Jawa | jav-000 | Niger |
| la lojban. | jbo-000 | gugdenuʼe |
| Nda’a | jgo-000 | Nijɛ̂ |
| Kimachame | jmc-000 | Nijeri |
| 日本語 | jpn-000 | ニジェール |
| 日本語 | jpn-000 | ニジェール共和国 |
| 日本語 | jpn-000 | ニジェール川 |
| Nihongo | jpn-001 | ''Nijēru''-gawa |
| Nihongo | jpn-001 | Nijēru |
| Taqbaylit | kab-000 | Nijer |
| kalaallisut | kal-000 | Niger |
| Kĩkamba | kam-000 | Naija |
| Kĩkamba | kam-000 | Nijeri |
| ಕನ್ನಡ | kan-000 | ನೈಜರ್ |
| كأشر | kas-000 | نایجَر |
| कॉशुर | kas-001 | नीजे |
| kạ̄šur | kas-002 | Nījē |
| ქართული | kat-000 | ნიგერი |
| қазақ | kaz-000 | Нигер |
| қазақ | kaz-000 | Нижер |
| Chimakonde | kde-000 | Nidyeli |
| kriolu kabuverdianu | kea-000 | Nijer |
| монгол | khk-000 | Нигер |
| ភាសាខ្មែរ | khm-000 | នីហ្សេរ |
| Koyra Chiini | khq-000 | Nižer |
| Gĩkũyũ | kik-000 | Naija |
| Gĩkũyũ | kik-000 | Nijeri |
| кыргыз | kir-000 | Нигер |
| Kalenjin | kln-000 | Emetab niger |
| Kalenjin | kln-000 | Naija |
| Kurmancî | kmr-000 | Nîjer |
| 한국어 | kor-000 | 니게르 |
| 한국어 | kor-000 | 니제르 |
| 한국어 | kor-000 | 니제르강 |
| Hangungmal | kor-001 | Nijereu |
| Kishambaa | ksb-000 | Naija |
| rikpa | ksf-000 | nijɛ́r |
| Kölsch | ksh-000 | Nijer |
| Kɨlaangi | lag-000 | Níija |
| ລາວ | lao-000 | ນິເຈີ |
| latine | lat-000 | Niger |
| Lingua Franca Nova | lfn-000 | Nijer |
| lengua lígure | lij-000 | Niger |
| lingála | lin-000 | Nizer |
| lingála | lin-000 | Nizɛrɛ |
| lietuvių | lit-000 | Nigeris |
| lengua lumbarda | lmo-000 | Niger |
| Lëtzebuergesch | ltz-000 | Niger |
| Tshiluba | lub-000 | Nijere |
| Oluganda | lug-000 | Nije |
| Dholuo | luo-000 | Naija |
| Dholuo | luo-000 | Niger |
| Oluluyia | luy-000 | Naija |
| Oluluyia | luy-000 | Nijeri |
| latviešu | lvs-000 | Nigēra |
| മലയാളം | mal-000 | നീഷര് |
| മലയാളം | mal-000 | നീഷര് |
| മലയാളം | mal-000 | നൈജർ |
| मराठी | mar-000 | नाइजर |
| मराठी | mar-000 | नायजर |
| ɔl Maa | mas-000 | Nijeri |
| Kĩmĩrũ | mer-000 | Naija |
| Kĩmĩrũ | mer-000 | Nija |
| morisyin | mfe-000 | Nizer |
| Meetto | mgh-000 | Unijeri |
| македонски | mkd-000 | Нигер |
| Malti | mlt-000 | Niġer |
| Malti | mlt-000 | in-Niġer |
| reo Māori | mri-000 | Ngäika |
| mundaŋ | mua-000 | Sǝr Niger |
| မြန်မာဘာသာ | mya-000 | နိုင်ဂျာ |
| Mianka | myk-000 | Nizhɛɛri |
| مازرونی | mzn-000 | نیجر |
| Bân-lâm-gú | nan-005 | Niger |
| Nàmá | naq-000 | Nigeri |
| Nāhuatlahtōlli | nci-000 | Nixer |
| isiNdebele | nde-000 | Niger |
| Plattdüütsch | nds-000 | Niger |
| Plattdüütsch | nds-000 | Nigerstroom |
| Plattdüütsch | nds-000 | Republik Niger |
| Plattdüütsch-Neddersassisch | nds-002 | Niger |
| Nederlands | nld-000 | Niger |
| Kwasio | nmg-000 | Niger |
| nynorsk | nno-000 | Niger |
| bokmål | nob-000 | Niger |
| Novial | nov-000 | Niger |
| नेपाली | npi-000 | नाइजर |
| Runyankore | nyn-000 | Naigya |
| occitan | oci-000 | Nigèr |
| ଓଡ଼ିଆ | ory-000 | ନାଇଜର୍ |
| ирон ӕвзаг | oss-000 | Нигер |
| Amanung Sisuan | pam-000 | Niger |
| ਪੰਜਾਬੀ | pan-000 | ਨਾਈਜਰ |
| فارسی | pes-000 | جمهوري نيجر |
| فارسی | pes-000 | رودخانه نیجر |
| فارسی | pes-000 | نیجر |
| Isfahani | pes-001 | Niǧer |
| Norfuk | pih-000 | Niijir |
| fiteny Malagasy | plt-000 | Niger |
| lenga piemontèisa | pms-000 | Nìger |
| polski | pol-000 | Niger |
| polski | pol-000 | Republika Nigru |
| português | por-000 | Niger |
| português | por-000 | Níger |
| português | por-000 | República do Níger |
| português | por-000 | Rio Níger |
| زبان دری | prs-000 | نایجر |
| Runa Simi | que-000 | Niqir |
| Runa Simi | que-000 | Níger |
| Qusqu qhichwa simi | quz-000 | Niqir |
| Kihorombo | rof-000 | Nijeri |
| lingua rumantscha | roh-000 | Niger |
| română | ron-000 | Niger |
| Kirundi | run-000 | Nijeri |
| русский | rus-000 | Ниге́р |
| русский | rus-000 | Нигер |
| русский | rus-000 | Нигерия |
| русский | rus-000 | Республика Нигер |
| russkij | rus-001 | Niger |
| Kiruwa | rwk-000 | Nijeri |
| Sängö | sag-000 | Isa Ber |
| Sängö | sag-000 | Nizëre |
| саха тыла | sah-000 | Нигер |
| संस्कृतम् | san-000 | नीजे |
| saṃskṛtam | san-001 | Nīje |
| Samburu | saq-000 | Nijeri |
| Ishisangu | sbp-000 | Nijeli |
| lingua siciliana | scn-000 | Niger |
| cisena | seh-000 | Níger |
| Koyraboro senni | ses-000 | Nižer |
| Žemaitiu | sgs-000 | Nigeris |
| Tacelḥit | shi-001 | nnijir |
| ⵜⴰⵛⵍⵃⵉⵜ | shi-003 | ⵏⵏⵉⵊⵉⵔ |
| සිංහල | sin-000 | නයිජර් |
| slovenčina | slk-000 | Niger |
| slovenčina | slk-000 | Nigerská republika |
| slovenščina | slv-000 | Niger |
| davvisámegiella | sme-000 | Niger |
| anarâškielâ | smn-000 | Niger |
| chiShona | sna-000 | Niger |
| Soomaaliga | som-000 | Nayjer |
| español | spa-000 | Níger |
| español | spa-000 | República del Niger |
| español | spa-000 | República del Níger |
| español | spa-000 | Río Níger |
| español | spa-000 | el Níger |
| español | spa-000 | la República del Níger |
| español | spa-000 | río Níger |
| shqip | sqi-000 | Nigeri |
| sardu | srd-000 | Nixèr |
| српски | srp-000 | Нигер |
| srpski | srp-001 | Niger |
| Kiswahili ya Kongo | swc-000 | Nijeri |
| svenska | swe-000 | Niger |
| Kiswahili | swh-000 | Niger |
| Kiswahili | swh-000 | Nijeri |
| Kiswahili ya Kenya | swh-010 | Nijer |
| Ślůnsko godka | szl-000 | Ńiger |
| தமிழ் | tam-000 | நைஜர் |
| tamiḻ | tam-002 | Naijar |
| tatar tele | tat-000 | Нигер |
| తెలుగు | tel-000 | నైజర్ |
| Ateso | teo-000 | Nijeri |
| тоҷикӣ | tgk-000 | Нигер |
| тоҷикӣ | tgk-000 | Ниҷер |
| Tagalog | tgl-000 | Niger |
| ภาษาไทย | tha-000 | ประเทศไนเจอร์ |
| ภาษาไทย | tha-000 | สาธารณรัฐไนเจอร์ |
| ภาษาไทย | tha-000 | แม่น้ำไนเจอร์ |
| ภาษาไทย | tha-000 | ไนเจอร์ |
| ትግርኛ | tir-000 | ኒጀር |
| ትግርኛ | tir-000 | ናይጀር |
| lea fakatonga | ton-000 | Nisia |
| xiTsonga | tso-000 | Niger |
| Türkçe | tur-000 | Nijer |
| Tásàwàq | twq-000 | Nižer |
| Talossan | tzl-000 | Niger |
| Tamaziɣt | tzm-001 | Nnijer |
| Peace Corps 2007 Tamazight | tzm-009 | nnijer |
| ئۇيغۇرچە | uig-000 | نىگېر |
| ئۇيغۇرچە | uig-000 | نېگىر |
| Uyghurche | uig-001 | Nigér |
| українська | ukr-000 | Нігер |
| українська | ukr-000 | Ніґер |
| اردو | urd-000 | نائجر |
| اردو | urd-000 | نائیجر |
| oʻzbek | uzn-000 | Niger |
| Ўзбекча | uzn-001 | Нигер |
| ꕙꔤ | vai-000 | ꕯꔤꕧ |
| Vai | vai-001 | Naĩja |
| łéngua vèneta | vec-000 | Niger |
| tiếng Việt | vie-000 | Ni-giê |
| tiếng Việt | vie-000 | Niger |
| Volapük | vol-000 | Nigerän |
| Kyivunjo | vun-000 | Nijeri |
| Walser | wae-000 | Niger |
| kàllaama wolof | wol-000 | Niiseer |
| kàllaama wolof | wol-000 | Niseer |
| Lusoga | xog-000 | Nije |
| nuasúɛ | yav-000 | nisɛ́ɛl |
| ייִדיש | ydd-000 | ניזשער |
| èdè Yorùbá | yor-000 | Náíjà |
| èdè Yorùbá | yor-000 | Nìjẹ̀r |
| èdè Yorùbá | yor-000 | Orílẹ́ède Nàìjá |
| èdè Yorùbá Orílẹ̀-èdè Olómìnira ilẹ̀ Benin | yor-011 | Orílɛ́ède Nàìjá |
| 廣東話 | yue-000 | 尼日 |
| 廣東話 | yue-000 | 尼日爾 |
| ⵜⴰⵎⴰⵣⵉⵖⵜ | zgh-000 | ⵏⵏⵉⵊⵉⵔ |
| Bahasa Malaysia | zsm-000 | Niger |
| Bahasa Malaysia | zsm-000 | Sungai Niger |
| isiZulu | zul-000 | i-Niger |