ConLang Code Registry

The ConLang Code Registry (CLCR) is a project led by Rebecca Bettencourt to assign ISO-639-3 codes out of the "reserved for local use" area (qaa-qtz) to constructed languages.

Constructed Languages with ISO-639-3 Codes

The following constructed languages already have official ISO-639-3 codes and will therefore not be included in the CLCR.

CodeLanguageCodeLanguageCodeLanguage
afhAfrihiliinaInterlinguasjnSindarin
avkKotavaisvInterslavictlhKlingon
bztBrithenigjboLojbantokToki Pona
dmfMedefaidrinldnLáadantzlTalossan
dwsDutton World SpeedwordslfnLingua Franca NovavolVolapük
epoEsperantoneuNeozbaBalaibalan
idoIdonovNovialzblBlissymbols
igsInterglossaqyaQuenya
ileInterlingue (Occidental)rmvRomanova

Withdrawn from CLCR

The following constructed languages have been withdrawn from CLCR due to being assigned official ISO-639-3 codes. Congratulations to our graduates!

CodeLong CodeLanguageReplaced WithDate WithdrawnAuthor
qbaart-x-balaibalBalaibalanzba2022-01-31Fazlallah Astarabadi or Muhyî-i Gülşenî
qisart-x-interslvInterslavicisv2024-04-03Juraj Križanić
qmeart-x-medefaidMedefaidrindmf2022-06-04Michael Ukpong & Akpan Akpan Udofia
qtkart-x-tokiponaToki Ponatok2022-01-31Sonja Lang

CLCR Assignments

Most notable conlangs already have codes assigned. If you know of a notable conlang without a code, you can register for a code here.

CodeLong CodeLanguageDate AddedAuthor
qaaart-x-aaenʾÅa̩en2013-10-27B. Gian James
qabart-x-albakiyeAl Bakiyye2019-10-13Mevlüt Baki Tapan
qacart-x-achiyitqAchiyitqan2015-03-06Sev Halverson
qadart-x-ardlangArdlang2014-09-16Elia Ansaloni
qaeart-x-aelisÆlis2015-01-06Frederic Gesell
qafart-x-qafesonaQafesona2018-12-18Pá mamūnám ontā́ bán
qagart-x-atlanteaAtlantean2015-03-15Marc Okrand
qahart-x-ayorthaAyorthaian2018-11-09Gail Carson Levine
qaiart-x-auiiaUI2015-03-15W. John Weilgart
qajart-x-adjuviloAdjuvilo2023-06-22Claudius Colas
qakart-x-keshKesh2019-03-20Ursula K. Le Guin
qalart-x-alfinuAlfinu2014-02-10Andrej Schütz
qamart-x-amarieAmarie2014-11-07Even Dybevik
qanart-x-atlaansAtlaans2015-01-09Rolf Weimar
qaoart-x-angosAngos2014-02-10Ben Wood
qapart-x-asapiliAsa'pili2023-06-22Hans Widmer
qarart-x-ammaniarámman îar2015-03-16David Bell
qasart-x-ashailleAsha'ille2010-01-21Arthaey Angosii
qatart-x-attianAttian2013-05-16Waahlis
qauart-x-alurhsaAlurhsa2014-11-03Tony Harris
qavart-x-valianValian2013-08-30Billy J.B.
qaxart-x-xazikXažik2013-10-27B. Gian James
qayart-x-ayeriAyeri2011-09-21Carsten Becker
qazart-x-adunaicAdûnaic2015-05-25J.R.R. Tolkien
qbbart-x-babmBabm2016-01-23Rikichi (Fuishiki) Okamoto
qbcart-x-belterBelter Creole2023-06-22Nick Farmer
qbdart-x-broodingBrooding2018-10-26BenJamin P. Johnson, Veronica Hamilton, Ryan D. Long
qbeart-x-bearlandBearlandic2014-11-08Dē Graut Bʉr
qblart-x-baladiriBäladiri2018-02-10Johannes Drucker
qbmart-x-bahasaBahasa Makronezhjë2018-01-27Aziz Bastosun
qboart-x-bolakBolak2015-03-15Léon Bollack
qbsart-x-blackBlack Speech2018-11-04J.R.R. Tolkien
qbuart-x-budinosBudinos2023-06-22Yuri Perevoshchikov, et al.
qcaart-x-cannicCannic2012-12-07Nikhil Sinha
qceart-x-celineseCelinese2013-11-23A. Ayres
qcgart-x-cacciggaCaccigga2011-09-21Sam Stutter
qcjart-x-carrajinCarrajina2011-09-21Adam Walker
qckart-x-cumbraekCumbraek2015-01-10Neil Whalley
qcoart-x-aeranirCoeñar Aerānir2019-10-18Gaffney Flancer
qcqart-x-ceqliTceqli2015-03-15Rex F. May
qcrart-x-caryasCaryas2013-05-15Billy J.B.
qcsart-x-commssprCommunicationssprache2018-03-25Joseph Schipfer
qcxart-x-commonCommon (na Xafen)2020-02-15Stephen DeGrace
qcyart-x-cylenianÐeprot Kyleðr Nenanðir2014-11-13Dengs Krysei
qdaart-x-daminDamin2015-03-15the Lardil tribe
qdeart-x-delniitDelniit2018-09-29Zarainia Frost
qdhart-x-dhannuaDhannuá2013-05-15Billy J.B.
qdiart-x-dniiD'ni2015-03-06Richard Watson
qdjart-x-duojjinDuojjin2014-11-07Clayton-Dean Lafontaine
qdlart-x-delangDelang2011-09-21Koppa Dasao
qdmart-x-damiyaaDamiyaa2014-11-03Aslan Richard
qdnart-x-deiniDeini2010-01-23Dana Nutter
qdoart-x-dothrakiDothraki2011-09-21David J. Peterson
qdrart-x-dritokDritok2015-03-16Donald Boozer
qdtart-x-danteriaDanterian2018-12-10Elliott Wheeler
qdwart-x-weltdeutWeltdeutsch2023-06-22Wilhelm Ostwald
qdyart-x-wenedykWenedyk2015-03-15Jan van Steenbergen
qdzart-x-damishenDamishen2016-07-28Axel Krustofski
qeaart-x-takeΤο Ἄνευ Κλίσι Ἑλληνική2015-03-16Ray Brown
qecart-x-enchantaEnchanta2017-01-05Suzette Doctolero
qedart-x-edunEdun2021-06-08Biblaridion
qefart-x-efateseEfatese2022-06-04Daniel MacDonald
qehart-x-elasianÉlászyato meret2013-05-15Billy J.B.
qekart-x-eskayanEskayan2015-03-15Pinay
qelart-x-eurolengEurolengo2023-06-22Leslie Jones
qemart-x-epoarcArcaicam Esperantom2023-06-22Manuel Halvelik
qenart-x-enochianEnochian2015-03-15John Dee & Edward Kelley
qerart-x-eporefReformed Esperanto2023-06-22L.L. Zamenhof
qetart-x-epotwoEsperanto II2023-06-22René de Saussure
qeuart-x-europantEuropanto2018-03-25Diego Marani
qevart-x-edievianEdievian2015-03-05Brandon Cubelo
qfeart-x-feorranFeorran2015-03-16Brad Coon
qfhart-x-fithFith2019-12-29Jeffrey Henning
qfiart-x-finianFinian2013-05-15Billy J.B.
qfkart-x-folkspraFolksprak2016-01-23the Folkspraak community
qflart-x-faulianFaulian2014-11-10Thomas R.C. de Roo
qfnart-x-fenghirFén Ghír2013-05-15Tadhg N. Sráide
qfoart-x-formosanFormosan2017-01-25George Psalmanazar
qfrart-x-florenzeFlorenze2016-10-18Andrew Pereira Justiniano
qfsart-x-fritheyFriðejaskir / Frithey2015-03-05Jökull
qfyart-x-feayranFeayran2011-09-22David Edwards
qfzart-x-fazulFazul2017-01-06Ava Kendall
qgbart-x-globasaGlobasa2024-10-03Hector Ortega
qgdart-x-godelicGodelician2015-02-08Frederic Bayer
qgiart-x-uziliUzili2019-03-19A. Grogan
qglart-x-glosaGlosa2015-03-15Ron Clark & Wendy Ashby
qgmart-x-gomainGomain2015-01-08Zachary Hart
qgrart-x-grippingGripping Language2015-03-16Alex Fink & Sai
qgsart-x-guosaGuosa2023-06-22Alex Igbineweka
qgtart-x-valthungValthungian2019-02-06BenJamin P. Johnson
qguart-x-univglotUniversalglot2023-06-22Jean Pirro
qgvart-x-gravgalnGraavgaaln2011-09-21Adam Walker
qgzart-x-gzbbGjâ-Zym-Byn2015-03-15Jim Henry
qhaart-x-halacaeHalacae2023-08-21R74n
qhdart-x-newdutchThe New Dutch2018-10-02Kasidit Srichompoo
qhiart-x-shivaisiShiväisith2020-06-11David J. Peterson
qhkart-x-haraktiHarākti2013-09-12Andrej Schütz
qhlart-x-helsenHelsen2015-05-25Harry Hult
qhnart-x-haniHani2014-11-03Spence Hill
qhrart-x-hrasicHrasic2013-05-16Waahlis
qhvart-x-valyrianHigh Valyrian2015-03-15David J. Peterson
qiaart-x-iazychieIazychie2017-01-05Ukrainian Russophiles
qidart-x-idraniIdrani2017-12-18Trent Pehrson
qieart-x-savieStandard Average Indo-European (SAvIE)2024-08-29Jasmine Andrever-Wright
qikart-x-iaskyonIaskyon2014-03-02Kenneth Ngan
qilart-x-ilainiIlaini2017-01-05Irina Rempt
qinart-x-idiomneuIdiom Neutral2015-03-15Waldemar Rosenberger
qioart-x-iovebIoVeb2016-06-03Cassondra Foesch
qitart-x-ithkuilIthkuil2013-05-15John Quijada
qivart-x-isadduʾIšaddu Yat-Vṛḵaẕikam2014-12-06Malcolm Holborne
qiwart-x-intalIntal2023-06-22Erich Weferling
qjeart-x-jeiiosJeïos2015-06-21Marvin Johanning
qjgart-x-jolgolegJølgoleg2015-08-12Oliver Williams
qjkart-x-jahkarraJáhkarrá2019-07-16David Müller
qjrart-x-jardaJarda2015-12-06Herman Miller
qjtart-x-juteanJutean2017-09-12Juhan Telschow
qjuart-x-juhashJuhash2017-01-06Evan May
qkaart-x-kalusaKalusa2015-03-16Gary Shannon
qkbart-x-kobaianKobaïan2015-10-13Christian Vander
qkdart-x-kardakKardak2013-11-29Mike Bacon
qkeart-x-kelenKēlen2015-03-15Sylvia Sotomayor
qkhart-x-khisadamKhīsadamiurī2014-11-03Cedric J.N. Ludlow
qkiart-x-kiwiKiwi2013-09-04Waahlis
qkkart-x-kilikiKiliki2023-06-22Madhan Karky
qklart-x-kielKiel2014-11-03Daniel Adler
qkmart-x-kronurumI Kronurum2015-12-06Nicolas Straccia
qknart-x-katsuviaKatsuvian2019-06-20Kärvjal Tämöö
qkoart-x-koraakiiKõraakii2015-06-23Marvin Johanning
qkrart-x-krigKrig2010-01-21Jeff Sheets
qksart-x-kashKash2015-12-31Roger Mills
qktart-x-ktiiKti2014-07-29J. Drucker
qkuart-x-khuzdulKhuzdul2018-03-25J.R.R. Tolkien
qkwart-x-kamakawiKamakawi2011-09-21David J. Peterson
qkxart-x-kalabaxKalaba-X2015-03-15Kenneth L. Pike
qkyart-x-anyuKolyma Ainu2018-08-06Rowan Jacobs
qkzart-x-kauzasiaKauzasian2015-05-27D. Alfaro
qlaart-x-linepariLineparine2017-09-02Fafs Falira Sashimi
qlcart-x-lincosLincos2017-01-05Hans Freudenthal
qldart-x-logopandLogopandecteision2023-06-22Sir Thomas Urquhart
qlfart-x-laefevesLaefêvëši2013-08-24Andrej Schütz
qlgart-x-generaliLingua Generalis2023-06-22Gottfried Leibniz
qlhart-x-lhenaziLhenazi2010-01-21Arthaey Angosii
qliart-x-ignotaLingua Ignota2015-03-15Hildegard of Bingen
qljart-x-khlijhaKhlìjha2014-11-03James William McCleary
qlkart-x-lupikkuLupikku2017-09-01Oshojo
qlnart-x-nouvelleLangue Nouvelle2015-03-15Joachim Faiguet de Villeneuve
qloart-x-loglanLoglan2015-03-15James Cooke Brown
qlpart-x-planetaLingwa de Planeta2015-03-15Dmitri Ivanov
qlrart-x-lrahranLrahran2011-09-22Adam Walker
qlsart-x-lsffLatino sine Flexione2015-03-15Giuseppe Peano
qltart-x-lorthoLortho2018-01-25Brian B. Bourque
qlvart-x-lonishLonish2015-10-28Pim Boonen
qlxart-x-loxianLoxian2023-06-22Roma Ryan
qlyart-x-lydneviLydnevi2023-06-22Libor Sztemon
qmcart-x-mablicMablic2019-03-16L. Genzel
qmdart-x-mondialMondial2017-06-25Dr. Helge Heimer
qmgart-x-mbamigiMbamigi2017-07-09Izaak
qmiart-x-isyanIsyan2014-09-15Jonathan Stockman
qmjart-x-maltcegjMaltcégj2023-08-24BenJamin P. Johnson
qmkart-x-mikianaMikiana2010-01-21Rebecca G. Bettencourt
qmlart-x-mundolinMundolinco2015-03-15J. Braakman
qmnart-x-umbreanUmbrean2013-10-03Zelos Malum
qmoart-x-motenMoten2015-01-08Christophe Grandsire-Koevoets
qmtart-x-mantiMänti2023-06-22Daniel Tammet
qmuart-x-munaMuna2015-03-13Miguel Bartelsman
qmvart-x-mahavicOld Mahavic2017-01-06Ava Kendall
qmzart-x-zaumZaum2023-06-22Velimir Khlebnikov, et al.
qnaart-x-nadsatNadsat2015-03-15Anthony Burgess
qnbart-x-nalbinoNal Bino2015-03-15Sébastian Verheggen
qndart-x-xynderXynder2015-03-15Dean Fernandez
qngart-x-cwengarCwengâr2013-05-15Tadhg N. Sráide
qnhart-x-northeadNortheadish2023-08-24BenJamin P. Johnson
qniart-x-unishUnish2017-06-25Sejong University, Korea
qnjart-x-wenjaWenja2023-06-22Andrew & Brenna Byrd
qnkart-x-nyspekeNỳspèke2011-09-21Sam Stutter
qnlart-x-novoslovNovoslovnica2015-07-29Jegor Karpov
qnoart-x-norsianNorsian2014-11-10Thomas R.C. de Roo
qnpart-x-nepokiNēpoki2014-11-07Wilhelm Stetter
qnrart-x-novegradNovegradian2015-03-16Martin Posthumus
qnsart-x-neoslavNeoslavonic2011-09-24Vojtech Merunka
qntart-x-netaginNetagin2014-01-04Ílchőfti Lēmáthīd
qnvart-x-naviNa'vi2013-05-15Paul Frommer
qnxart-x-nithalosNithalosian2014-02-10Jayden Carr
qnyart-x-nimyadNimyad2010-01-21Thomas Thurman
qnzart-x-nzaysaBuruya Nzaysa2011-09-22Jan Strasser
qocart-x-ochrienOchrien2015-01-06A. Ayres
qokart-x-okunaOkuna2015-03-16Matt Pearson
qosart-x-qosmianiQôsmianî2018-03-25Wilburg Massat Law Beatty
qpaart-x-palawaPalawa Kani2022-06-04Tasmanian Aboriginal Centre
qpkart-x-pakuniPakuni2015-10-28Victoria Fromkin
qplart-x-pasilingPasilingua2023-06-22Paul Steiner
qpnart-x-panduniaPandunia2018-01-30Risto Kupsala
qpvart-x-viossaViossa2022-12-28r/conlangs
qpyart-x-pyashKsom Pyash2022-03-12Andrii Logan Zvorygin
qrcart-x-realcharReal Character2023-06-22John Wilkins
qrdart-x-romanidRomanid2018-03-25Zoltán Magyar
qreart-x-ureduREd2014-05-11Serena Innocenti
qrgart-x-ragiRagi2014-11-03Spence Hill
qrhart-x-romulanRomulan2021-06-13Diane Duane
qriart-x-rissRis2013-06-18Waahlis
qrjart-x-rejistanRejistanian2011-09-22Mechthild Czapp
qrkart-x-rikchikRikchik2015-03-16Denis Moskowitz
qrmart-x-romanicoRomániço2023-06-22Οὖτις
qrnart-x-karnisnaKarnišna2014-02-10Andrej Schütz
qroart-x-roooRo2015-03-15Rev. Edward Powell Foster
qrpart-x-uropiUropi2015-03-15Joël Landais
qrrart-x-rjargiRjargi2014-05-01Miguel Bartelsman
qrsart-x-resosResos Sus-Sana2015-10-13David Malmström
qruart-x-runyakitRunyakitara2023-06-22Ugandan Universities
qryart-x-yerkishYerkish2017-01-05Ernst von Glasersfeld
qrzart-x-anrishAnrish2019-02-21Aedemn Egnras
qsaart-x-salhariSalhari2013-12-11Alex Sands
qsbart-x-sambahsaSambahsa2015-03-15Olivier Simon
qscart-x-soculSoc'ul'2024-01-14Dillon Hartwig
qseart-x-skerreSkerre2015-03-16Doug Ball
qsfart-x-verduriaVerdurian2015-03-15Mark Rosenfelder
qsgart-x-sagaviSagavi2013-12-07Paul Jones
qshart-x-shikathiShikathi2014-11-03James Allen
qsiart-x-silosSilōs2015-01-10Clayton Williams & Andrew John Bevolo IV
qsjart-x-shajShaj2016-01-23Joshua Levin
qskart-x-sakasulSakasul2014-11-03Kenji Sawatari
qslart-x-silindioSilindion2015-03-16Elliott Lash
qsnart-x-sandicSandic2014-11-03A.C. Simon
qsoart-x-solresolSolresol2015-01-08François Sudre
qspart-x-spokilSpokil2015-03-15Adolphe Nicolas
qsqart-x-siberianSiberian2018-03-25Yaroslav Zolotarev
qsrart-x-serenSeren2013-11-22Inara Tabir
qssart-x-sasxsekSasxsek2010-01-23Dana Nutter
qsvart-x-slovioSlovio2015-03-15Mark Hučko
qsxart-x-sonaSona2015-03-15Kenneth Searight
qsyart-x-syldaviaSyldavian2015-03-15Hergé
qszart-x-szezkSzezk2017-09-01Benjamin Uden
qtaart-x-aeonianTongue of Annunciation2013-10-27B. Gian James
qtbart-x-vitebergViteberger2014-11-03Renato Piereck
qtcart-x-tcathanTcathan2019-09-20Tim Pappas
qteart-x-telerinTelerin2015-05-25J.R.R. Tolkien
qthart-x-qthyngaiQþyn|gài2023-08-18Henrik Theiling
qtiart-x-tiraneseTiranese2016-06-24Tiffany White
qtjart-x-thrjotruÞrjótrunn2023-08-18Henrik Theiling
qtkart-x-tirkunanTirkunan2023-08-18Henrik Theiling
qtlart-x-tsolyaniTsolyáni2015-03-15M.A.R. Barker
qtmart-x-tmasareTmaśareʔ2011-09-22Jan Strasser
qtnart-x-teonahtTeonaht2015-03-15Sally Caves
qtoart-x-utopianUtopian2020-08-29Thomas More & Peter Giles
qtpart-x-tapissarTapissary2018-12-31Steven Travis
qtqart-x-toaqToaq2023-01-01Hoemaı
qtrart-x-tirelatTirelat2012-10-19Herman Miller
qtsart-x-tsanTsan2013-05-16Waahlis
qttart-x-tutonishTutonish2023-06-22Elias Molee
qtuart-x-tukitikiTuki Tiki2024-04-11ka Tumu (Ðoom Epictooþ)
qtvart-x-tvernelTvern El2011-09-21Adam Walker
qtyart-x-treyllTreyll2013-11-29Andrea Greynolds
qtzart-x-knastaKnašta2013-12-20Ian Duncan

Roadmap to the CLCR

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qjaqjbqjcqjdqjeqjfqjgqjhqjiqjjqjkqjlqjmqjnqjoqjpqjqqjrqjsqjtqjuqjvqjwqjxqjyqjz
qkaqkbqkcqkeqkfqkgqkhqkiqkjqkkqklqkmqknqkoqkpqkqqkrqksqktqkuqkvqkwqkxqkyqkz
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qpaqpbqpcqpdqpeqpfqpgqphqpiqpjqpkqplqpmqpnqpoqppqpqqprqpsqptqpuqpvqpwqpxqpyqpz
qqaqqbqqcqqdqqeqqfqqgqqhqqiqqjqqkqqlqqmqqnqqoqqpqqqqqrqqsqqtqquqqvqqwqqxqqyqqz
qraqrbqrcqrdqreqrfqrgqrhqriqrjqrkqrlqrmqrnqroqrpqrqqrrqrsqrtqruqrvqrwqrxqryqrz
qsaqsbqscqsdqseqsfqsgqshqsiqsjqskqslqsmqsnqsoqspqsqqsrqssqstqsuqsvqswqsxqsyqsz
qtaqtbqtcqtdqteqtfqtgqthqtiqtjqtkqtlqtmqtnqtoqtpqtqqtrqtsqttqtuqtvqtwqtxqtyqtz
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