|- ! aaa | || || I/L || Niger–Congo? || || Ghotuo |- ! aab | || || I/L || Atlantic–Congo || || Alumu-Tesu |- ! aac | || || I/L || Suki-Gogodala || || Ari |- ! aad | || || I/L || Sepik || || Amal |- ! aae | || || I/L || Indo-European || || Arbëreshë Albanian |- ! aaf | || || I/L || Dravidian || || Aranadan |- ! aag | || || I/L || Torricelli || || Ambrak |- ! aah | || || I/L || Torricelli || || Abu' Arapesh |- ! aai | || || I/L || Austronesian || || Arifama-Miniafia |- ! aak | || || I/L || Angan || || Ankave |- ! aal | || || I/L || Afro-Asiatic || afaë || Afade |- ! (aam) | || || I/L || spurious language || || Aramanik |- ! aan | || || I/L || Tupian || || Anambé |- ! aao | || || I/L || Afro-Asiatic || || Algerian Saharan Arabic |- ! aap | || || I/L || Cariban || || Pará Arára |- ! aaq | || || I/E || Algic || || Eastern Abnaki |- ! aar | aa || aar || I/L || Afro-Asiatic || Qafar af || Afar |- ! aas | || || I/L || Afro-Asiatic || || Aasáx |- ! aat | || || I/L || Indo-European || || Arvanitika Albanian |- ! aau | || || I/L || Sepik || || Abau |- ! aaw | || || I/L || Austronesian || || Solong |- ! aax | || || I/L || Trans–New Guinea || || Mandobo Atas |- ! (aay) | || || I/L || spurious language || || Aariya |- ! aaz | || || I/L || Austronesian || || Amarasi |- ! aba | || || I/L || Atlantic–Congo || || Abé |- ! abb | || || I/L || Atlantic–Congo || || Bankon |- ! abc | || || I/L || Austronesian || || Ambala Ayta |- ! abd | || || I/L || Austronesian || || Manide |- ! abe | || || I/L || Algic || Wôbanakiôdwawôgan || Western Abnaki |- ! abf | || || I/L || Austronesian || || Abai Sungai |- ! abg | || || I/L || Trans–New Guinea || || Abaga |- ! abh | || || I/L || Afro-Asiatic || || Tajiki Arabic |- ! abi | || || I/L || Atlantic–Congo || || Abidji |- ! abj | || || I/E || Great Andamanese || || Aka-Bea |- ! abk | ab || abk || I/L || Northwest Caucasian || аԥсуа бызшәа || Abkhazian |- ! abl | || || I/L || Austronesian || || Lampung Nyo |- ! abm | || || I/L || Atlantic–Congo || || Abanyom |- ! abn | || || I/L || Atlantic–Congo || || Abua |- ! abo | || || I/L || Atlantic–Congo || || Abon |- ! abp | || || I/L || Austronesian || || Abellen Ayta |- ! abq | || || I/L || Northwest Caucasian || абаза || Abaza |- ! abr | || || I/L || Atlantic–Congo || || Abron |- ! abs | || || I/L || Austronesian || || Ambonese Malay |- ! abt | || || I/L || Ndu || || Ambulas |- ! abu | || || I/L || Atlantic–Congo || ɔbule ɔyʋɛ || Abure |- ! abv | || || I/L || Afro-Asiatic || || Baharna Arabic |- ! abw | || || I/L || Trans–New Guinea || || Pal |- ! abx | || || I/L || Austronesian || || Inabaknon |- ! aby | || || I/L || Yareban || || Aneme Wake |- ! abz | || || I/L || Timor-Alor-Pantar || || Abui |- ! aca | || || I/L || Arawakan || Achawa || Achagua |- ! acb | || || I/L || spurious language || || Áncá |- ! (acc) | || || I/L || spurious language || || Cubulco Achí |- ! acd | || || I/L || Atlantic–Congo || || Gikyode |- ! ace | || ace || I/L || Austronesian || Bahsa Acèh; بهسا اچيه || Achinese |- ! acf | || || I/L || French Creole || kwéyòl || Saint Lucian Creole French |- ! ach | || ach || I/L || Nilotic || || Acoli |- ! aci | || || I/E || Great Andamanese || || Aka-Cari |- ! ack | || || I/E || Great Andamanese || || Aka-Kora |- ! acl | || || I/E || Great Andamanese || || Akar-Bale |- ! acm | || || I/L || Afro-Asiatic || || Mesopotamian Arabic |- ! acn | || || I/L || Sino-Tibetan || Ngachang; အာချန် || Achang |- ! acp | || || I/L || Atlantic–Congo || || Eastern Acipa |- ! acq | || || I/L || Afro-Asiatic || || Ta'izzi-Adeni Arabic |- ! acr | || || I/L || Mayan || || Achi |- ! acs | || || I/E || Macro-Jê || || Acroá |- ! act | || || I/L || Indo-European || Achterhooks || Achterhoeks |- ! acu | || || I/L || Jivaroan || || Achuar-Shiwiar |- ! acv | || || I/L || Palaihnihan || Ajúmmááwí || Achumawi |- ! acw | || || I/L || Afro-Asiatic || || Hijazi Arabic |- ! acx | || || I/L || Afro-Asiatic || || Omani Arabic |- ! acy | || || I/L || Afro-Asiatic || || Cypriot Arabic |- ! acz | || || I/L || Talodi || || Acheron |- ! ada | || ada || I/L || Atlantic–Congo || || Adangme |- ! adb | || || I/L || spurious language || || Atauran |- ! add | || || I/L || Atlantic–Congo || || Dzodinka; Lidzonka |- ! ade | || || I/L || Atlantic–Congo || || Adele |- ! adf | || || I/L || Afro-Asiatic || || Dhofari Arabic |- ! adg | || || I/L || Pama–Nyungan || || Andegerebinha |- ! adh | || || I/L || Nilotic || || Adhola |- ! adi | || || I/L || Sino-Tibetan || || Adi |- ! adj | || || I/L || Atlantic–Congo || mɔjukru || Adioukrou |- ! adl | || || I/L || Sino-Tibetan || || Galo |- ! adn | || || I/L || Timor-Alor-Pantar || || Adang |- ! ado | || || I/L || Lower Sepik-Ramu || || Abu |- ! (adp) | || || I/L || spurious language || || Adap |- ! adq | || || I/L || Atlantic–Congo || || Adangbe |- ! adr | || || I/L || Austronesian || || Adonara |- ! ads | || || I/L || West African gestural area || || Adamorobe Sign Language |- ! adt | || || I/L || Pama–Nyungan || Yura Ngawarla || Adnyamathanha |- ! adu | || || I/L || spurious / Niger–Congo? || || Aduge |- ! adw | || || I/L || Tupian || || Amundava |- ! adx | || || I/L || Sino-Tibetan || || Amdo Tibetan |- ! ady | || ady || I/L || Northwest Caucasian || Адыгабзэ || Adygei; Adyghe |- ! adz | || || I/L || Austronesian || || Adzera |- ! aea | || || I/E || Pama–Nyungan || || Areba |- ! aeb | || || I/L || Afro-Asiatic || تونسي || Tunisian Arabic |- ! aec | || || I/L || Afro-Asiatic || || Saidi Arabic |- ! aed | || || I/L || Sign Language || || Argentine Sign Language |- ! aee | || || I/L || Indo-European || || Northeast Pashai; Northeast Pashayi |- ! aek | || || I/L || Austronesian || || Haeke |- ! ael | || || I/L || Atlantic–Congo || || Ambele |- ! aem | || || I/L || Austroasiatic || || Arem |- ! aen | || || I/L || Sign Language || || Armenian Sign Language |- ! aeq | || || I/L || Indo-Aryan || || Aer |- ! aer | || || I/L || Pama–Nyungan || || Eastern Arrernte |- ! aes | || || I/E || isolate || || Alsea |- ! aeu | || || I/L || Sino-Tibetan || || Akeu |- ! aew | || || I/L || Keram || || Ambakich |- ! (aex) | || || I/L || spurious language || || Amerax |- ! aey | || || I/L || Trans–New Guinea || || Amele |- ! aez | || || I/L || Trans–New Guinea || || Aeka |- ! afb | || || I/L || Afro-Asiatic || || Gulf Arabic |- ! afd | || || I/L || Arafundi || || Andai |- ! afe | || || I/L || Atlantic–Congo || || Putukwam |- ! afg | || || I/L || isolate || || Afghan Sign Language |- ! afh | || afh || I/C || constructed || || Afrihili |- ! afi | || || I/L || Lower Sepik-Ramu || || Akrukay; Chini |- ! afk | || || I/L || Arafundi || || Nanubae |- ! afn | || || I/L || Ijoid || || Defaka |- ! afo | || || I/L || Atlantic–Congo || || Eloyi |- ! afp | || || I/L || Arafundi || || Tapei |- ! afr | af || afr || I/L || Indo-European || Afrikaans || Afrikaans |- ! afs | || || I/L || English Creole || || Afro-Seminole Creole |- ! aft | || || I/L || Nyimang || || Afitti |- ! afu | || || I/L || Atlantic-Congo || || Awutu |- ! afz | || || I/L || Lakes Plain || || Obokuitai |- ! aga | || || I/E || unattested || || Aguano |- ! agb | || || I/L || Atlantic–Congo || || Legbo |- ! agc | || || I/L || Atlantic–Congo || || Agatu |- ! agd | || || I/L || Trans–New Guinea || || Agarabi |- ! age | || || I/L || Trans–New Guinea || || Angal |- ! agf | || || I/L || Austronesian || || Arguni |- ! agg | || || I/L || Senagi || || Angor |- ! agh | || || I/L || Atlantic–Congo || || Ngelima |- ! agi | || || I/L || unattested || || Agariya |- ! agj | || || I/L || Afro-Asiatic || || Argobba |- ! agk | || || I/L || Austronesian || || Isarog Agta |- ! agl | || || I/L || East Strickland || || Fembe |- ! agm | || || I/L || Angan || || Angaataha |- ! agn | || || I/L || Austronesian || || Agutaynen |- ! ago | || || I/L || Angan || || Tainae |- ! (agp) | || || I/L || Austronesian || || Paranan |- ! agq | || || I/L || Atlantic–Congo || aghím || Aghem |- ! agr | || || I/L || Jivaroan || awajun || Aguaruna |- ! ags | || || I/L || Atlantic–Congo || || Esimbi |- ! agt | || || I/L || Austronesian || || Central Cagayan Agta |- ! agu | || || I/L || Mayan || awakateko || Aguacateco |- ! agv | || || I/L || Austronesian || || Remontado Dumagat |- ! agw | || || I/L || Austronesian || || Kahua |- ! agx | || || I/L || Northeast Caucasian || агъул || Aghul |- ! agy | || || I/L || Austronesian || || Southern Alta |- ! agz | || || I/L || Austronesian || || Mt. Iriga Agta |- ! aha | || || I/L || Atlantic–Congo || || Ahanta |- ! ahb | || || I/L || Austronesian || || Axamb |- ! (ahe) | || || I/L || spurious language || || Ahe |- ! ahg | || || I/L || Afro-Asiatic || || Qimant |- ! ahh | || || I/L || Trans–New Guinea || || Aghu |- ! ahi | || || I/L || Kru || || Tiagbamrin Aizi |- ! ahk | || || I/L || Sino-Tibetan || || Akha |- ! ahl | || || I/L || Atlantic–Congo || || Igo |- ! ahm | || || I/L || Kru || || Mobumrin Aizi |- ! ahn | || || I/L || Atlantic–Congo || || Àhàn |- ! aho | || || I/E || Tai–Kadai || || Ahom |- ! ahp | || || I/L || Atlantic–Congo || || Aproumu Aizi |- ! ahr | || || I/L || spurious language || || Ahirani |- ! ahs | || || I/L || Atlantic–Congo || || Ashe |- ! aht | || || I/L || Na-Dené || || Ahtena |- ! aia | || || I/L || Austronesian || || Arosi |- ! aib | || || I/L || Turkic || || Ainu (China) |- ! aic | || || I/L || Border || || Ainbai |- ! aid | || || I/E || Pama–Nyungan || || Alngith |- ! aie | || || I/L || Austronesian || || Amara |- ! aif | || || I/L || Torricelli || || Agi |- ! aig | || || I/L || English Creole || || Antigua and Barbuda Creole English |- ! aih | || || I/L || Tai–Kadai || || Ai-Cham |- ! aii | || || I/L || Afro-Asiatic || ܣܘܪܝܝܐ ܣܘܪܝܬ,ܐܬܘܪܝܐ ܣܘܪܝܝܐ || Assyrian Neo-Aramaic |- ! aij | || || I/L || Afro-Asiatic || || Lishanid Noshan |- ! aik | || || I/L || Atlantic–Congo || || Ake |- ! ail | || || I/L || Bosavi || || Aimele |- ! aim | || || I/L || Sino-Tibetan || || Aimol |- ! ain | || ain || I/L || isolate || アイヌ イタク(イタック) || Ainu (Japan) |- ! aio | || || I/L || Tai–Kadai || || Aiton |- ! aip | || || I/L || Trans–New Guinea || || Burumakok |- ! aiq | || || I/L || Indo-European || || Aimaq |- ! air | || || I/L || Tor-Kwerba || || Airoran |- ! (ais) | || || I/L || Austronesian || || Nataoran Amis |- ! ait | || || I/E || Tupian || || Arikem |- ! aiw | || || I/L || South Omotic || || Aari |- ! aix | || || I/L || Austronesian || || Aighon |- ! aiy | || || I/L || Atlantic–Congo || || Ali |- ! (aiz) | || || I/L || Afro-Asiatic || || Aari |- ! aja | || || I/L || Kresh-Aja || || Aja (South Sudan) |- ! ajg | || || I/L || Atlantic–Congo || || Aja (Benin) |- ! aji | || || I/L || Austronesian || || Ajië |- ! ajn | || || I/L || Worroran || || Andajin |- ! (ajp) | || || I/L || Afro-Asiatic || || South Levantine Arabic |- ! ajs | || || I/L || village sign language || || Algerian Jewish Sign Language |- ! (ajt) | || || I/L || spurious language || || Judeo-Tunisian Arabic |- ! aju | || || I/L || Afro-Asiatic || || Judeo-Moroccan Arabic |- ! ajw | || || I/E || Afro-Asiatic || || Ajawa |- ! ajz | || || I/L || Sino-Tibetan || || Amri Karbi |- ! aka | ak || aka || M/L || Niger–Congo? || Akan || Akan |- ! akb | || || I/L || Austronesian || || Batak Angkola |- ! akc | || || I/L || isolate || || Mpur |- ! akd | || || I/L || Atlantic–Congo || || Ukpet-Ehom |- ! ake | || || I/L || Cariban || || Akawaio |- ! akf | || || I/L || Niger–Congo || || Akpa |- ! akg | || || I/L || Austronesian || || Anakalangu |- ! akh | || || I/L || Trans–New Guinea || || Angal Heneng |- ! aki | || || I/L || Ramu || || Aiome |- ! akj | || || I/E || Great Andamanese || || Aka-Jeru |- ! akk | || akk || I/H || Afro-Asiatic || akkadû || Akkadian |- ! akl | || || I/L || Austronesian || Inakeanon || Aklanon |- ! akm | || || I/E || Great Andamanese || || Aka-Bo |- ! (akn)