| μ | Pikutu 
 | 
| µ | Pisina 
 | 
| A Forrest | Zhong Ying 
 | 
| A. de Jong | Volapük Revised 
 | 
| A. Mendes | Igrejan 
 | 
| A. Michelle Simmons | Drow 
 | 
| A.B. Basham | Aertran 
 | 
| Aaron Chapman | Folksstem 
Nordien 
Somish 
 | 
| Aaron Morse | Diarenye 
Sialy 
 | 
| Aaron Ruimy | han-taj-tUl-hUt 
 | 
| Accard | Tinxirean 
 | 
| Ace | Acian 
 | 
| ACZ | Ïnlici 
Ongaki 
Spet 
 | 
| Adam Parrish | Doraya 
Saakha 
Telyana 
 | 
| Adam Walker | B-G-2-3 
Carrajena 
Graavgaaln 
Languages of the Commonwealth 
Lifhomese 
Lrahran 
q~'u^pl! 
Tvernel 
Xt! 
 | 
| Adolphe Charles Antoine Marie Nicolas | Spokil 
 | 
| Aidan Gray | Nrit 
 | 
| Ajin Kwai | Babalo 
Draqa 
Drhaqa 
 | 
| AK Brady | Eseshté-basó 
 | 
| Akira Toriyama | Namek 
 | 
| Alan Giles | Gilo 
 | 
| Albrynnian, Andan, Hlayan, Kai'shanar, Katanic, Kishar, Margadian, | Keolah's Languages 
 | 
| Alessandro Pedicelli | Lara 
 | 
| Alex Alfaro | Kæseran 
 | 
| Alex Beaverstone | Ludycian 
 | 
| Alex Bolton | Mellyrn 
 | 
| Alex Fink | kimwa lilyeho 
Kingiwa 'Awiwasa 
õingææ 
pjaukra 
 | 
| Alex Katsaros | Mesogeoika 
 | 
| Alex Middleton | Jylsk 
Krithnag 
Retehitu 
 | 
| Alfred Berendt | Berendt 
 | 
| Alison Fisher | Lanrohidh'il 
 | 
| Aljam | Rònic 
 | 
| Allen Squires | Noceltaeh 
 | 
| Almirus | Amelic 
 | 
| Amanda Babcock | mërèchi 
 | 
| Amanda Babcock Furrow | Toma Heylm 
 | 
| Amanda Smith | Lipu'onai 
 | 
| Anand Buchwald | Terrasihla 
 | 
| And Rosta | Livagian 
 | 
| Andemu Alu | Early Rònic 
 | 
| Andre Steffens | Aninese 
Aulingese 
Detbap 
 | 
| Andreas Eckardt | Safo 
 | 
| Andreas Johansson | Meghean 
 | 
| Andrei Burago | TRAN 
 | 
| Andrew Hardie | Dilhok 
 | 
| Andrew J. Meilstrup | Liñxî 
Rhyllan 
 | 
| Andrew Lai | Irsawa 
 | 
| Andrew Leventis | Andanese 
Moonshine 
Palli 
Xap II 
 | 
| Andrew McKenzie | Mamseunsci 
 | 
| Andrew Nowicki | Ebubo 
Ygyde 
 | 
| Andrew Smith | Brithenig 
Vayaun 
 | 
| Andy Helber | Yerti 
 | 
| Aneel Nazareth | Pikachu 
 | 
| Ángel Serrano | Aingeljã 
 | 
| Anonymous | Pig Latin 
Romanico 
 | 
| Anselm Huppenbauer | Archeía 
Aubhárith 
Bvazred 
Coeniathen 
Vardhastani 
 | 
| Anthony Burgess | Nadsat 
 | 
| Anthony Docimo | C-23 
C-24 
 | 
| Anthony Harris | Alurhsa 
 | 
| Anthony Lawless, Evan Gallagher, Jan Havliš, Jim Morgan | it-Cejdijtung, Ctung 
 | 
| Anthony Raymond Bullard | Dashul 
E Dashul 
 | 
| Anton Kemmeren | Saphah 
 | 
| Antonio Espada | Dendrix 
 | 
| Apollo Hogan | aw'ingiwa 
Chrol 
Dozhu:n 
Khikeng 
Kingfa 
 | 
| Aran Kuntze | Ancallon languages 
 | 
| Ariano Reyes | Lojsk 
 | 
| Arne Arotnow | EDA 
 | 
| Arne Duering | Duirún 
Eurún 
 | 
| Artemio de Cosma | Romula 
 | 
| Arthaey Angosii | Asha'ille 
 | 
| Arturo Alfandari | Neo 
 | 
| Asier | Asrord-Dânis 
Ethire 
 | 
| Asier G. | Adare 
Ayeis 
Valmelind 
 | 
| Aslan Majas | Keadaa muil 
 | 
| Aszlan Majas | Muila 
 | 
| Austin Tappan Wright | Islandian 
 | 
| B. Egon Breitenbach | Fasile 
 | 
| B. Morgan White | inif Xeuivteles 
 | 
| Barnett Russell | Suma 
 | 
| Barry Garcia | Ayhan 
Sakatda Ka Kadomo 
 | 
| Ben Poplawski | Regelluga 
Thereskeya 
 | 
| Benct Philip Jonsson | Mærik 
Slvanjec 
Sohlob 
 | 
| Benjamin Bruce | Benjish 
 | 
| Betsumei | Golal Natkali 
 | 
| Bicoherent | Pig Elvish 
 | 
| Bill Price | Vabungula 
 | 
| Blake Adams | Diallic 
 | 
| Bo Bernvill | Somerish 
 | 
| Bonifacio Sotos Ochando | Lengua Universal 
 | 
| Boomajoom | Luinin 
Nalonin 
 | 
| Boudewijn Rempt | Andal, languages of 
Barushlani 
Broyan 
Denden 
Old Hyksos 
 | 
| Brad Coon | Feorran 
Nova 
 | 
| Bradford L. Lewis | Susachi 
 | 
| Bradford Morgan White | Oda Zginzgala 
Swa-di 
Vamperr 
 | 
| Brandon (Mizenki) | Aligian 
 | 
| Brian Connors | Var'aq 
 | 
| Brian Hagan | D'lateequ 
 | 
| Brian Suchsland-Gutiérrez | Latötsc 
 | 
| Bruce A. Brejta | Bruceish 
 | 
| Bruce Foerster | Adawa 
 | 
| Bruce Gilson; et al | Voksigid 
 | 
| Bruce Koestner | Eaiea 
 | 
| Bruce Rimell | Danan 
 | 
| Bruce V. Bracken | Üqoi 
 | 
| Bryan Ashley James Parry | Anglish 
 | 
| Bryant | Draconic 
 | 
| Bryant K. | Almalinian 
 | 
| Bucchianeri Marco | Antique Lantian 
Kot 
 | 
| C. Dietrich | Völkerverkehrssprache 
 | 
| C. Grandsire | Astou 
Tja-tsan 
 | 
| C. J. Cherryh | Mri 
 | 
| C. K. Ogden | Basic English 
 | 
| C. Letellier | Langue Universelle 
 | 
| C. Newburn | Sidanjala 
 | 
| C. S. Lewis | Malacandrian 
 | 
| C.J. Cherryh | Hani 
 | 
| C.J. Cherryh; Spence Hill | Kiffish 
 | 
| C.J.Cherryh; Rodlox | Atevi 
 | 
| Carl Buck | Qatama 
 | 
| Carl T. Berkhout | Anglo-Saxon Computerese 
 | 
| Carlos Cervera | Sorgalo 
 | 
| Carrie Schutrick | Erone 
 | 
| Carrie Schutrick, J.W. Justice, Shawn Knight | Triparik 
 | 
| Carsten Becker | Ayeri 
Daléian 
Ve Segelm A Laighödhét 
 | 
| Cattelain Eric | Unideo 
 | 
| Catty | Tomato 
 | 
| Cave Beck | Universal Character 
 | 
| Ceisiwr Serith | Kwendyngu 
 | 
| Certic | Lakal/Saradic 
 | 
| Cesare Meriggi | Blaia Zimondal 
 | 
| Charles Kasiel Bliss | Blissymbolics 
 | 
| Charles Milton Elam | Oz 
 | 
| Charles Newburn | Malininic 
 | 
| Charles Stewart | Universal Cipher Language 
 | 
| Charlie Brickner | Senyecan 
 | 
| Chipilak | Chipilak 
 | 
| Chlewey Thompin | Criollo 
 | 
| Chris Ashton | Vendi 
 | 
| Chris Bates | Niline lale 
 | 
| Chris Bouchard | Anaqaen 
 | 
| Chris Collins | Radilu 
 | 
| Chris Paull (Zeke Fordsmender) | Cepperjoleddicg 
Thiazic 
Tikasako 
 | 
| Chris Pressey | Opus-2 
 | 
| Chris Rohan | Merilareth 
 | 
| Christian Thalmann | Jovian 
Obrenje 
Oro Mpaa 
 | 
| Christian Vander | Kobaïan 
 | 
| Christophe Grandsire | Azak 
Moten 
Narbonósc 
Reman 
 | 
| Christopher Mules | Apralios 
 | 
| Christopher Paolini | Ancient Language, The 
 | 
| Christopher Reid Palmer | Pala-kalloejna 
 | 
| Christopher Wright | Fampónd 
Hansu 
Lashkos 
Sturnan 
 | 
| Cindy Drolet | Unipix 
 | 
| civman2000 | Inagalasi 
 | 
| Claudio Gnoli | Liva 
 | 
| Cliff C. | Jlin 
 | 
| Cliff Crawford | Qat'w 
 | 
| Clint Jackson Baker | Káyasánoda 
 | 
| Clinton Moreland-Stringham | Aelya 
 | 
| Clyde Heaton | Old Dwarvish 
Orcish 
 | 
| Cola/Esperema | Adjuvilo 
 | 
| Collectif Oneira | Oneirien 
 | 
| Collective | tinico 
 | 
| Connor Becker | Nômík Sprøk 
 | 
| Cristián Cuevas | Nüreqio 
 | 
| Curlyjimsam | Vixen 
Vônánà 
 | 
| Curtis Mullings | Islic Wood Elvish 
Midikan 
O'lelic 
Sea Elvish 
Sunset Elvish (Pinuidan) 
Vadhawian 
 | 
| Dacian | Nesupian 
 | 
| Dale Morris | Aeldarspragc 
 | 
| Dallin Woolstenhulme | Dael 
 | 
| Damátir Ando | Çomyopregi 
 | 
| Damien Erwan Perrotin | Gothic 
Gutisk 
 | 
| Damon M. Lord | Chickenese 
Nabel 
Wessisc 
 | 
| Dan Cole | Tharan 
 | 
| Dan Morrison | Kansu 
 | 
| Dan Tohatan | Romana 
 | 
| Dana Hadar | Linka Romànika 
 | 
| Dana Nutter | SASXSEK 
 | 
| Daniel Andreasson | Corint 
Nakiltipkaspimak 
Rinya 
Seimi 
 | 
| Daniel Carrasco | Awolang 
 | 
| Daniel Day | Nuatic 
 | 
| Daniel Jewell | Hystudian 
 | 
| Daniel Myers | Eloram 
Islet 
Kine 
Ozay 
Vosh 
 | 
| Daniel S. Andersen | Cilthic 
 | 
| Daniel Sacks | Cacone 
 | 
| Daniel Tammet | Mänti 
Uusisuom 
 | 
| Danny Wier | Tech 
 | 
| DarkHorizon | Kiadin 
 | 
| Darrell Manrique | Larua 
 | 
| Dave Hampton | Furbish 
 | 
| David | Dingwâ 
Tazhai 
 | 
| David Bell | Amman-Iar 
Forendar 
 | 
| David Bourland | E-Prime 
 | 
| David C. Morrow | Shondan 
 | 
| David Caveney | uuteib eafeis 
 | 
| multiple contributors | Romanova 
 | 
| David Durand | Dapnant 
 | 
| David Dynes | Merdian 
 | 
| David J. Peterson | Epiq 
Gweydr 
Kamakawi 
Kelenala 
KNSL 
Megdevi 
Njaama 
Sathir 
Sheli 
X 
Zhyler 
 | 
| David J.S. Boyle | Kalonese 
 | 
| David Johnson (Sonib) | Lesdekan 
 | 
| David Kirschner | Merian 
 | 
| David Mackey | P'Ren 
 | 
| David Stewart-Candy | Talhata 
 | 
| David Stokes | Diom 
 | 
| David Th. Stark | Latino Moderne 
 | 
| Dazi | Cinpzy 
Descubralía 
Lepidopteran (Ze) 
 | 
| de Saussure | Antido 
 | 
| Dean Easton | Thosk 
Ungil 
 | 
| Decker | Landero 
Tsalu 
 | 
| Deiniol Jones | Arvorec 
Jelbazech 
 | 
| Denis Moskowitz | Rikchik 
 | 
| Dennis Paul Himes | Gladilatian 
 | 
| Diane Duane | Ailurin 
Romulan 
 | 
| Didier Willis | Goblin 
 | 
| Diego Marani | Europanto 
 | 
| Dillon Shaw | Aronian 
 | 
| Dirk Elzinga | Tepa 
 | 
| Disney | Stitch Words 
 | 
| Don P. Blaheta | Unnamed Conlang 
 | 
| Doug Ball | Skerre 
Tanach-a Shile 
 | 
| Douglas Green, Kevin Albrecht, and Kristian Jarventaus | Nalona 
 | 
| Douglas Green, Kristian Jarventaus, Kevin Albrecht | InterLang 
 | 
| Dr X | Pushakian 
 | 
| Dr. C. George Boeree | Lingua Franca Nova 
 | 
| Dr. Chris K. Caldwell | Prime Lexicon 
 | 
| Dr. Hans Freudenthal | Lincos 
 | 
| Drew Fischer | Etrer'aous 
 | 
| Drydic_Guy | Arēsæd 
C^al 
Coastal Zein 
Darale≠ 
Drydic 
Eastern Drydic 
Highland Zein 
Illanī 
Kerinidoi 
Lan 
Moragravēs 
Nova Anglica 
Salanjan 
Udraþ 
Western Zein 
 | 
| Dtsdesign | Esreverian 
Graod 
Kramxelian 
Kya'terrian 
P'bankian 
Pictban 
Sidonian 
Straifpin'r 
Tukbeyo 
Wilawossian 
Yahina 
Zelknaym 
 | 
| Duke Keenan | Ok 
 | 
| Duke Keenan; Nathaniel Ament-Stone; Dean Powell | Celltiecc 
 | 
| Dutton, Reginald J. G. | Speedwords 
 | 
| E. Wainscott | UNI 
 | 
| Eclipse/Turquoise | Kika Olelo 
 | 
| Ed Heil | Voorish 
 | 
| Ed Robertson | Dunia 
 | 
| Eddy Ohlms | P@x'àãokxáã 
 | 
| Eddy the Great | Kûtêruûknêtîmû (Terpish) 
Miouateku 
Ptx:f 
Tá à p'u 
Teaakitâukŗŗkuaaŀæ 
Telpuilkoc 
 | 
| Edgar c. | Emterz 
 | 
| Edgar Rice Burroughs | Amtorian 
Ape (Mangani) 
Barsoomian 
 | 
| Edgar von Wahl | Occidental 
 | 
| Edmund H. North | Klaatu's Language 
 | 
| Edmund Shaftesbury | Adam-Man Tongue 
 | 
| Edrik | Zan 
 | 
| Edward Field | Ar-na-Kamyt 
Atlo-Greek 
Egaeic 
Nartrean 
Sarminath 
Yeaji 
 | 
| Edward Groves | Pasilogia 
 | 
| Edward Hatfield | Achaean 
Linear A/Minoan 
 | 
| Eirik Olsen | Lacue 
 | 
| Eirik Wixøe Svela | Woznackh 
 | 
| Elias Molee | Tutonish 
 | 
| Elliot Jackson | Alrusomanz 
 | 
| Elliott Lash | Silindion 
 | 
| Elmer J. Hankes | ehmay ghee chah 
 | 
| Elx Amnial | Omnial 
 | 
| Emily Bisset | Mornaë 
 | 
| Eric Anger | Arionak 
Ceiteish 
Denisian 
Liniyai-Karmisa 
Méntríaanes 
Prajiþiast 
Ravenloftish 
Suoníppomí 
Yeledumel Thanusil 
 | 
| Eric Beaubien | Cyberyak 
 | 
| Eric Raymond | Prototype Worlds 
 | 
| Eric Remington | Irecepte 
 | 
| Eric Sleator McGill | Kokipopi 
 | 
| Eric the Best | Aran'Esei 
Pe'Ma'De 
 | 
| Erich Weferling | Intal 
 | 
| Erik Parsels | Niw Englisc 
 | 
| Estel Telcontar | Ikanirae Seru 
 | 
| Esther Schrager | Kardasi 
 | 
| Etak | Tarnese 
 | 
| Eternia | Etwu 
 | 
| Eugenio M. Vigo | Dermensin 
Mêriale Nunérim 
Mêriate et Darae 
Sharioléh 
 | 
| Exu Yangi | Tsumhetyan 
 | 
| F.A.Fabian, Sr. | Talumena 
 | 
| Faiguet | Langue Nouvelle 
 | 
| Felix Brender | Anikin 
 | 
| Fen Yik | Lûá 
 | 
| Fenwick | Enochian 
 | 
| Ferenc Gyorgy Valoczy | Gamyar 
Neo-Dalmatian 
Vranian 
 | 
| Filip Skwarski | Logsan 
 | 
| Final Fantasy | Al Bhed 
 | 
| Florent Garet | Luni 
Meiko 
 | 
| Frances de Vilalonga | Aquitan 
 | 
| Frank Legros | Saiwosh 
 | 
| Frederick William Dyer | Lingualumina 
 | 
| Fuishiki Okamoto | Babm 
 | 
| G. I. Muravkin and L. I. Vasilevskij | Universal 
 | 
| G.W. Leibniz | Leibniz's Characteristica Universalis 
 | 
| Gabe Bloomfield | Nordálien 
 | 
| Gábor Sándi | Tundrian 
 | 
| Galivad | Otg 
 | 
| Garrett Jones | Minyeva 
 | 
| Gary Wann | Danarib 
 | 
| Geert Rinkel | gá'rDëMy 
 | 
| Gene Roddenberry | Golic Vulcan 
 | 
| Gene Wolfe | Ascian 
 | 
| Geoff Eddy | Astarien 
Breathanach 
Dekavurian 
Genistien 
Ivrien 
Juvenilia 
Kadhrein 
Lemyzon 
Liotan 
Machren 
Proto-Liotan 
Rachovian 
 | 
| Geoff Tuffli, Shai Strouse, B.G. Moser, et al | Taeisan Languages 
 | 
| Georg Bauer | Spelin 
 | 
| George ( Juraj ) Doudy | Proslava 
 | 
| George Dalgarno | Dalgarno's Universal Language 
 | 
| George Orwell | Newspeak 
 | 
| George Schaeffer | Octrin 
 | 
| Gideon O. Ioffe | Late Nietanian 
Nietarenska 
 | 
| Giovanni Angelo Doveri | Rèaniano 
 | 
| Giuseppe Peano | Latino Sine Flexione 
 | 
| Glenn Kempf | Chusole 
 | 
| Graham Mabey | Atlan (Atlantean) 
 | 
| Greg Hoover, Initiator | Inter-esperanto 
 | 
| Greg Johnston | Mapalgetian Continental Basic Language 
 | 
| Gregory H. Bontrager | Brujeric 
 | 
| Gregory Higley | Inda 
 | 
| Grigoriy Korolev | LANGUST 
 | 
| Gulliver | Mortesíelon 
 | 
| Gustaf Hansson | Cânnânn Naewinn 
Deweg 
Dwêxêg 
Eilig 
Elheg 
Nahéla 
 | 
| Gustavo Salvini | Dundein Vega 
 | 
| H. Ellis Ensle | Avesta 
 | 
| H. Miller | Sarbleski 
 | 
| H. S. Teoh | Ebisédian 
Tatari Faran 
 | 
| Hans Straub | Dêbiua 
 | 
| Harvard Lampoon | Auld Elvish 
 | 
| Henrik Theiling | Da Mätz se Basa 
Fukhian 
Q'en|gài 
Tyl Sjok 
 | 
| Hergé | Syldavian 
 | 
| Herman Miller | Alzetjan 
Cispa 
Czirehlat 
Eklektu 96 
Ipsilikhthar 
Jirit 
Kirezagi 
Ludireo 
Olaetian 
Tilya 
Tirelat 
Zharranh 
Zireenka 
 | 
| Herman Miller; et al | Gargish 
 | 
| Hildegarde of Bingen | Lingua Ignota 
 | 
| HiOJK | Harajelata 
 | 
| Hiroyuki Morioka | Abh 
Baronh 
 | 
| Horváth Róbert | Perilo 
 | 
| Ian Burleson | Latalmish 
 | 
| Ian K. Hunter | Litaja 
 | 
| Igor Garshin | LINC 
 | 
| Iisem | Aniese 
 | 
| Ikkakujyu | Draconic (Lovarin) 
Old Rashurish 
Venyárin 
 | 
| International Auxiliary Language Association | Interlingua 
 | 
| Irina Rempt | Ilaini 
 | 
| J Carbajal | Platio 
 | 
| J Harness | Uni Mar 
 | 
| J. Barefoot | Asiteya 
 | 
| J. Brandt-Young et al | Pwpwpw 
 | 
| J. Fatula | Chovur 
 | 
| J. Harness | Shoa 
 | 
| J. Hooper | Rtennin 
 | 
| J. K. Rowling | Harry Potter Magic Language 
 | 
| J. Linzbach | Transcendent Algebra 
 | 
| J. Matthew Saunders | Kor'ekhani 
 | 
| J. Prothero | Plan B 
 | 
| J. R. Mauro | Zjivalian 
 | 
| J. S. Burke | Nóyahtowa 
 | 
| J. Valler | Tulinx 
 | 
| J.R.R. Tolkien | Adûnaic 
Avarin 
Black Speech 
Doriathrin 
Elvish 
Entish 
Ilkorin 
Khuzdul 
Mannish 
Naffarin 
Nandorin 
Old Sindarin 
Primitive Elvish 
Qenya 
Quenya 
Sindarin 
Telerin 
Valarin 
Westron 
 | 
| J.R.R. Tolkien, David Salo | Khuzdul, Neo- 
 | 
| J.T. Antley | Kattoelai 
Late Réziko 
Réziko 
 | 
| Jack Durst | Alpha Smart 
 | 
| Jack McLaren & Pat Spacek | Chicken 
 | 
| Jack McNeill | Cuërna 
 | 
| Jacques Guy | Plan C 
 | 
| Jake "Fat Kid" Zeroth | Quebh 
 | 
| Jamal Abed-Rabbo | Jamalinaşķ 
 | 
| James | Microlang 1.0 
Shaleyan 
 | 
| James Campbell | Jameld 
Rahha 
Sevorian 
 | 
| James Cooke Brown | Loglan 
 | 
| James Doohan, Marc Okrand | Klingon 
 | 
| James E. F. Landau | Cetonian 
Hapoish 
Kankonian 
 | 
| James E. Hopkins | Itlani 
 | 
| James Finley | Abakwi 
 | 
| James Gurney | Saurian 
 | 
| James Johnson | Common Germanic 
 | 
| James Nicholls | Zurvár 
 | 
| James S. Grossmann | Goesk 
 | 
| Jan Havliš | Zoggian 
 | 
| Jan Havlis | Antapa 
Arkian 
Nassian 
Ossers/Nashi 
Ta Pémish Shprochna 
Viikqnnosf 
 | 
| Jan Skrob | San Corrado Langue 
 | 
| Jan van Steenbergen | Hattic 
Slezan 
Vozgian 
Wenedyk 
 | 
| Jar(r)da  Herman Miller | Gjarrda 
 | 
| Jashan | Kaliso 
 | 
| Jashan A'al | Ilythirri Alurl 
Kir 
Ley Arah 
Musbrek 
Neitetar 
Psharádi (Modern Tsaran) 
 | 
| Javant Biaruja | Taneraic 
 | 
| Jay Bowks | Auxilingua 
Bitruscan 
Ekspreso 
Esperando 
Europeano 
Latineo 
 | 
| Jayelinda Suridge | Kardii 
 | 
| Jean Delormel | Projet d'une langue universelle presente a la convention nationale 
 | 
| Jean Effel | Ecriture Universelle 
 | 
| Jean Francois Sudre | Solresol 
 | 
| Jean Pirro | Universalglot 
 | 
| Jean-Paul Nerrière | Globish 
 | 
| Jedrzej Gren | Ellandh 
 | 
| Jeff Goguen | Kioshu 
 | 
| Jeff Hopkins | Torrin 
 | 
| Jeff Jones | Vallés 
 | 
| Jeff Lilly | Ch-m Tlondor 
 | 
| Jeff S. Jones | 'Yemls 
 | 
| Jeff Smith | Ilianóre 
Iljanore 
 | 
| Jeff Vedvik | Katari 
 | 
| Jeffrey Henning | Basic Anglo-Saxon English 
Dublex 
Durdekors 
Fith 
Folkspraak 
Ilish 
Intermythic English 
Kali-sise 
Karklak 
Kordron 
Kriegsprach 
Minhyan 
Nunihongo 
Roxhai 
Sen:esepera 
Simpenga 
Tev'Meckian 
 | 
| Jeffrey Henning, et al | New English 
 | 
| Jeos Thegimis | Proto-Kesk'an 
 | 
| Jere Northrop | ODODU 
 | 
| Jeremy Boyd | Dementian 
 | 
| Jeremy Graves | Paiodd 
 | 
| Jeremy Marshall | Y-irril 
 | 
| Jerry Mings | Taki 
 | 
| Jesse Bangs | Yivrian 
 | 
| Jian Huang | Daisilingo 
 | 
| Jim Carter | gua!spi 
 | 
| Jim Francis | Loroi Trade 
 | 
| Jim Henry | gzb 
Llegisia 
Thauliralau Triyk 
Toaliralolo languages 
 | 
| Jim Taylor | Limciela 
Xara 
 | 
| Joachim Becher | Clavis Convenientiae Linguarum 
 | 
| Joe | Giak 
 | 
| Joël Landais | Uropi 
 | 
| Johann Martin Schleyer | Volapük 
 | 
| Johann Vielberth | KOD 
 | 
| Johannes Hufnagel | Eleiar 
Fergiartisch 
 | 
| John | Clalia 
Fegiartische 
 | 
| John Cowan | Piat 
xuxuxi 
 | 
| John Fisher | Elet Anta 
 | 
| John Leland | Meridonian 
 | 
| John Logan | Eloi 
 | 
| John M. Ford | Klingonaase 
 | 
| John Quijada | Ithkuil 
 | 
| John Shilpetski IV | Delendian 
 | 
| John Whatmough | Ahlimite 
Ascenderati 
Elatoi 
Gaelish 
Newahon 
Ngolopalnec 
Qhalite 
Xianese 
 | 
| John Wilkins | Wilkins' Analytical Language 
 | 
| Johnson, Kenneth; Johnson, Juliet; Ling, Van; Mislan, Scott | Tenctonese 
 | 
| Jon | WDFDspeak (Ostopian) 
 | 
| Jon Brase | Gelveasar 
 | 
| Jona J. Fras | Trurian 
 | 
| Jonathan Bettencourt | Mikiana 
 | 
| Jonathan Hayward | UberLingua 
 | 
| Jonathan North Washington | Ða difî 
Deviasew 
Deymual 
Espanzë 
Telvo 
Tïsjelán 
Tjelwu 
 | 
| Jonathan R Parsons | Eastron 
 | 
| Jonathana Tegire | /th/ Lang, The 
Aeo 
Avihalli 
Crilatse 
Ðabnøt 
Raxanakoa 
Tigerian 
Vihal 
 | 
| Jonathana Tegire and Jaaaaaa | ê Èëe 
Ii42hah32reh12man41 
 | 
| Jonathon Bly | Sap'e'o 
 | 
| Jonathon Grimes | Simpekso 
 | 
| Jordan Kay | Brandonian 
Omnesian 
 | 
| Jordan Lavender | Ambarnic 
Gilish 
Narish 
Qilmanian 
Ukunida 
Un'ky'ok 
Utésalañé 
 | 
| Jörg "paleface" Burkel | Yorlakesian (Mok'yorlak'ol) 
 | 
| Jörg Rhiemeier | Germanech 
Old Albic 
 | 
| Jorge Luis Borges | Tlön languages 
 | 
| Joris Bollen | Rootian English 
 | 
| José Guardiola | Kosmal Idioma 
 | 
| José Martínez | Barmuur 
Pamrul 
Pamryr 
 | 
| Jose Soares Da Silva | Sermo 
 | 
| Joseph de Maimieux | Von Morath Pasigraphy 
 | 
| Joseph W. Mynhier | Møkobi 
Poþi 
 | 
| Josh "Jae" Munce | Japanglish 
 | 
| Josh Brandt-Young | Terran 
 | 
| Josh Roth | Eloshtan 
Kar Marinam 
 | 
| Joshua E. Horn | Broken German 
 | 
| Joshua Horn | Isirian 
 | 
| Joshua Kartes | Aspele 
 | 
| Joshua Shinavier | Danovën/Arovën 
 | 
| Jotomicron | Derrae 
 | 
| JP Mallaroni | Silarg 
 | 
| jú | Rúmeann 
 | 
| Julius Lott | Mundo-Lingue 
 | 
| Jurre Lagerwaard | Lugasuese 
Varro 
Yathor 
 | 
| Justin B Rye | Futurese 
 | 
| Justin B. Rye | Constructed Language #4892 
 | 
| Justin Spahr-Summers | Jynmû 
Kótèsä 
 | 
| K La Touche | Hamdi 
 | 
| K. A. Kumi Attobrah | Afrihili 
 | 
| Kaihsu Tai | Nanigani 
 | 
| Kári Emil Helgason | Asmeni 
Imuttan 
Kìn-Sang 
Risan 
 | 
| Karl Jahn | Dha-Patu 
Maldekan 
Tho-Kyi 
 | 
| Kaspars Ozolins | Voidä 
 | 
| Kata Valinta | Florish 
 | 
| Kaurpin | Kakarak 
Scallin 
 | 
| Keith Gaughan | Eretas 
 | 
| Keith Mitchell | Iksto 
 | 
| Kelahäth Ohar | Arnira 
 | 
| Kelly Kozlowski|Carmen St. Jean | Oopee 
 | 
| Kenji Schwarz | Vilani 
 | 
| Kenneth L. Pike | Kalaba-X 
 | 
| Kenneth Searight | Sona 
 | 
| Keolah | Margadian 
Rivertongue 
Ronnes 
Senelhian 
Tominian 
Yeishan 
Zhakish 
 | 
| Kevin | Barallen 
 | 
| Kevin Albrecht | Naqu 
 | 
| Kevin Goodman | Iju Puna 
 | 
| Kevin P. Miller | Zadra 
 | 
| Kevin R. VanDenBreemen | Attrendian 
 | 
| Kevin Urbanczyk | Demonic/Alorian 
Proto-Drem 
 | 
| Kian | Kyran 
 | 
| Kuanye | Maltae 
Nalosya 
 | 
| Kumouri Endriago | Basple 
 | 
| L. Selbor | Lengua Universal 
 | 
| Lancelot Hogben | Essential World English 
Interglossa 
 | 
| Lane Schwartz; Ben Rogers | Jakelimotu 
 | 
| Lang Boy | Ylhäällä 
 | 
| Language Research Institute, Sejong University | Unish 
 | 
| Larry Sulky | Kon'ya 
 | 
| Lauren Tantalo | Alpítin 
 | 
| Laurie Gerholz | Arvandran 
Old Southern 
 | 
| Lawrence Lanier | R'yihdd 
 | 
| Lee Wilson | Mushroomese 
 | 
| Leo John Moser | Bahasan 
 | 
| Leon Bollack | Bolak 
 | 
| Leonhard Heinzmann | phonetic picture-writing 
 | 
| Leslie Charteris | Paleneo 
 | 
| Leslie Jones | Eurolengo 
 | 
| Libor Sztemon | Darseni 
Euransi 
Lydnevi 
Manadei 
Persevi 
Seversk 
Slavenian 
Slavisk 
Xronari 
 | 
| Linxiang Wang | Universala Lingva Kodo 
 | 
| Lord Blaa | Blaaninian 
 | 
| Louis de Beaufront, Louis Couturat | Ido 
 | 
| Lubor Vitek | Arlipo 
 | 
| Luc Besson | Divine Language, The 
 | 
| Luca Galdiolo | Gälðyr 
 | 
| Luciano Nicolás Parisi | Nemeritvie 
 | 
| Ludwig Lazarus Zamenhof | Esperanto 
 | 
| Luis Sainz Lopez-Negrete | Lusane 
 | 
| Luther Blissett | Satritain 
 | 
| M. Martin | Lano 
Laval 
 | 
| M. Pleyer | Unitario 
 | 
| M. Streiff | Bopal 
 | 
| Madhukar Gogate | Globish 
 | 
| Makeenan | Inter Celtic 
Tazhi 
 | 
| Maknas | Anaî 
Çanil 
Karis 
Malknarh 
Mekhael 
Mekhael 
Naranis 
Nóyanla 
Proto-East-Arakhelian 
Rosakeat 
Rusakui 
 | 
| Manel Jaume Sales | Sarjan 
 | 
| Mannus Talundberg | Perio 
 | 
| Manuel Halvelik | Arcaicam Esperantom 
 | 
| Marc Okrand | Atlantean 
 | 
| Marcelo Martinelli | 353 
 | 
| Marconatrix | Saprutum 
 | 
| Marcos Cramer | Logli 
 | 
| Marcos Franco | Novial Pro 
 | 
| Marcus Miles | Fortunatian 
Lahabic 
Uchunata 
 | 
| Mari Bandoma, Deise Benítez, Allison Buckley, Pablo Cabrera, Marc Callado, Patrick Chan, Charles Chang, Sarah Choi, Lizzy Ghedi-Ehrlich, Julie Gutiérrez, Norma Guzmán, Helen Khlystova, Jason Lin, Tom Nosewicz, Miriam Ochoa, David J. Peterson, Chris Ramiro, Michael Rivera, Adam Simpson, Amy Soong | Wasabi 
 | 
| Mariana Lo | Valavya 
 | 
| Marie Winger | Den'Ksie 
 | 
| Marius Ernst | Tantorin 
 | 
| Mark E. Shoulson | Yf Rgalin 
 | 
| Mark Hucko | Blitz English 
SLOVIO 
 | 
| Mark McGrath | jiVoqu 
Lasa 
 | 
| Mark P. Line | Classical Yiklamu 
Waldzell Conlang 
 | 
| Mark Reed | Okaikiar 
 | 
| Mark Rosenfelder | Axunashin 
Barakhinei 
Cadhinor 
Cuêzi 
Elkarîl 
Flaidish 
Ismain 
Kebreni 
Proto-Eastern 
Verdurian 
Wede:i 
 | 
| Marq Thompson | Qtwyqp Qly 
Ta Ti 
 | 
| Marq Thompson and Jon | Intero 
 | 
| Marshall Wildey | Veltish 
 | 
| Martin | Cytrurian 
kolaqadock 
 | 
| Martin F. | Reñim 
 | 
| Martin Ferretti | Anklis 
 | 
| Martin M. Conrad II | Tymru 
 | 
| Mary Incledon; J.R.R. Tolkien, et al | Nevbosh 
 | 
| Mary Incledon; Marjorie Incledon | Animalic 
 | 
| Mason Fraley | Oraq 
 | 
| Mathias | Tunu 
 | 
| Matt Arriola | Erog 
 | 
| Matt Pearson | Thh:tmaa 
Tokana 
 | 
| Matt Scott | Nanon 
 | 
| Matthew Butt | bac 
 | 
| Matthew Kehrt | Evíendadhail 
 | 
| Matthew See | Ælitian 
 | 
| Mattia Suardi | Anglo-Romance 
 | 
| Maurizio Gavioli | Kinya 
 | 
| Maurizio Rovatti | Flestrin 
 | 
| Max Talmey | Arulo 
 | 
| Max Wald | Pan-kel 
 | 
| Maxis Games | Simlish 
 | 
| Merle D. Zimmermann | Low Orkish 
SedoNeural 
 | 
| Mia Soderquist | Merahai 
Siidmak 
 | 
| Michael Bush | Aercant 
 | 
| Michael Cartier | MUL 
 | 
| Michael Helsem | Glaugnea 
 | 
| Michael Mechmann | Melani 
Rayatako 
 | 
| Michael S. Repton | Arêndron 
 | 
| Michele C. | Seyekoneth 
 | 
| Miekko | Bryatesle 
 | 
| Mike Brooker | Patrienish 
 | 
| Mike Ellis | Rhean 
 | 
| Mike Singleton | Ancient Tongue of the Wise 
 | 
| mikulzqm | Life Sound 
 | 
| Mizuta Sentaro | Noxilo 
 | 
| Mojsije Paic | Pasilalion 
 | 
| Morris | Lannu den gental 
 | 
| Mowameddo Regime | Mowhan 
 | 
| mr professor13 | Ganh 
 | 
| Mr. He Yafu | Mondlango 
 | 
| Mr. Klingon | Star Trek languages 
 | 
| Muhammad Abd-el-Rahman Barker | Tsolyáni 
 | 
| Muhammad Selim | Eurana 
 | 
| Muheddin | Bala-i-balan 
 | 
| Muke Tever | Daimyo 
Hadwan 
Ibran 
Kirumb 
 | 
| N. Gruscha|et al | Finnstek 
 | 
| N. Kuitse | SeMpaiton 
 | 
| NA | Almaqerin 
Archaen 
ASD-STE100 
Avaeran 
Balbylon 
Ca'olaeg 
Casta 
Cenlatorre 
Chanan 
Charyan languages 
Chevraqis 
Ciravesu 
Comunleng 
Conlangs of Destruction 
Coronese 
Damin 
Darkovan 
DEL 
Demua 
Deseret 
Dhemonh'ka 
Dinosaur Language 
Draconian 
Dwarfin 
Earth Minimal 
Emeni 
EuroEnglish 
Europan 
Ferismonlaren 
Finglish 
Géarthuns 
Gleeb 
Guask 
Heanasjacáel 
Herlanian 
Himmaswa 
Huttese 
Interlingue 
Javifo 
Jleer 
Keki 
Khul 
Khurwich 
Ksokish 
Kupo 
Kusthü 
La Lengua Universal 
Laikath 
Lainesco 
Language X 
LangX 
Leksventin 
Lijou 
Lingo 
Loglan 76 
Loglan 95 
Marata 
Microyak 
Miksa 
New Avaeran 
NGL 
'Ngwei-koo 'Lei 
Nickish 
NovIALA 
Nowapan 
Nyofa 
Oktaan 
Ook! 
Panovese Kal 
Pantato 
Parseltongue 
Penge lige 
Penginijtunge 
Rav Zarruvo 
Romanice 
Sakao 
Sapuho Dejeru 
Sarkelean 
Shan 
Shemdaoli 
Shotali 
Signuno 
SIMPLE 
Sitarwelas 
Skandinaviska 
Sotonok 
Sulekhï 
Sylvyn 
Taelons 
Tal-eglar 
Tamarian 
Thyllymas 
Tolte 
Tomoulini Ganmaa 
Trill 
Triparian 
TrQal 
Tudahe 
Tydash 
Ummo 
Universal Networking Language 
Universal Translation Language 
Voynich 
Web Language 
Yil 
Yinglish 
Yisian 
Zaynktooks 
 | 
| Natalia Gruscha | Mango 
 | 
| Nate and Steve | Rigavie Sutanio 
 | 
| Nathaniel G. Lew | Bendeh 
 | 
| Nathaniel Knight | Adin 
 | 
| Neal J. Roberts | Ibraang 
 | 
| Neal the Mad Chemist | Vassic 
 | 
| Necralitor | Zusayan 
 | 
| Neil Buckley | Neelan 
 | 
| Nick Kalivoda | Aéstari 
 | 
| Nick Summers | Xapqt 
 | 
| Nicola Curat | Arvan 
Bucovian 
Digor 
Llàtec 
Tatsique 
 | 
| Nicole Perrin | Ini 
Khundruzn 
Nevokanyi 
 | 
| Niels van der Plas | Elleya 
 | 
| Nik Taylor | Eastern 
Kagizerin 
Maktalu 
Tarnif 
Watakassí 
 | 
| Nikhil Sinha | Cannic 
Góquim 
Indika 
Nihilosk 
 | 
| Niki Eve White | Aeks Nótrï Nódikem 
 | 
| Nintendo | Pokemon 
 | 
| Nizar Habash | Delason 
 | 
| Noby Nobriga | Alarian 
 | 
| Noraa J. Suiralc | Noraan 
 | 
| NOVIAL-L | Novial 98 
 | 
| Nvwtohiyada Idehesdi Sequoyah (Billy Joe Waldon) | Poliespo 
 | 
| Obar Norrseg | Fungarr 
 | 
| Omid Ghayour | cni-vcti 
 | 
| Otto Jespersen | Novial 
 | 
| Otto Neurath | Isotype 
 | 
| P. M. Witkam | Esperanto de DLT 
 | 
| Paal Filssunu | Amerysk 
 | 
| Pablo Barenbaum | Chunotl 
Plefande 
 | 
| Pablo Flores | Biyuron 
Curco 
Draseléq 
G'amah 
Knarwaz 
Senu Yivokuchi 
Shkanshej 
Stālāg 
Ukhik 
Wamen 
 | 
| Paco "España" | Pakitani 
 | 
| Padraic | Mentolatian 
 | 
| Padraic Brown | Kerno 
Talarian 
 | 
| Pafu | Esata 
 | 
| Pascal A. Kramm | Advanced English 
Choton 
Intergermansk 
 | 
| Patrick Dunn | Atas 
 | 
| Patrick Littell | Ystheron 
 | 
| Patrick Pfeaster | Arangothian 
Aslarian 
Assi 
Igmerind 
Leturian 
 | 
| Paul Bartlett | Frater 2 
 | 
| Paul Blake | xathmel 
 | 
| Paul Hoffman | Sinampaiton 
 | 
| Paul Smith | Paulic 
 | 
| Paul V. S. Townsend, M.Sc. | Hallon 
 | 
| Paulo Eduardo França Padilha | Kaupelanese 
 | 
| Pawel Ciupak | Jezik Slovianaja 
 | 
| Pentekonter | Aroni 
Ngetsu 
Oetadh 
Shadebu 
 | 
| Pete Bleackley | Khangaþyagon 
Kimva 
Kingifa 
ñakiw pym wifiw kingewhàwwas 
 | 
| Peter Bleackley | Mágikimnaz 
 | 
| Peter Carroll and others | Ouranian-Barbaric 
 | 
| Peter Davis | Desa Chat 
 | 
| Peter Mark Garza | iaPil 
 | 
| Peter Ramsey | Vash 
 | 
| Pham Xuan Thai | Frater 
 | 
| Pharazon | Llathos 
 | 
| Phil James | Eskimo 
 | 
| Philip Hunt | Eurolang 
 | 
| Philip Newton | Ko e Vagahau he Motu 
 | 
| Pokpong Wongkaeo | Xéniara 
 | 
| Prof. John Lihani, Ph.D. | Transitional English 
 | 
| Przybylowicz | Nuspic 
 | 
| Psiphim6 | Sintí 
 | 
| PyterVoeros | Strelwidhan 
 | 
| Quentin Read | Aqobagena 
Folkiske 
Idjana 
Laxonomasoljomijodo 
WittyWordWork 
 | 
| R. Ben Madison | Talossan 
 | 
| Raginvard Flut | Diudisk 
 | 
| Ran | Proto-Dalurian 
 | 
| Randal L. Lanning | Melindaran 
 | 
| Raphael Carter | Darmok 
 | 
| Raphael Singing Wolf | Kiromi 
 | 
| Ray Flores | Matsui 
 | 
| Rebecca Harbison | Byashrei 
Darynese 
 | 
| Reginald J. G. Dutton, F.R.S.A. | Rap Lin Rie 
 | 
| Reginald J.G. Dutton | Dutton Speedwords 
 | 
| Reinhart Keim | Nirdaen 
 | 
| Remi Villatel | Shaquelingua 
 | 
| Ren Willocks | Ýtádý 
 | 
| Renato Piereck | Akbiekdi 
 | 
| René Uittenbogaard | Calénnawn 
Eyahwánsi 
 | 
| Renli Marek | Namarin 
 | 
| Rev. and Mrs. Edward Powell Foster | Ro 
 | 
| Rex F. May | Ceqli 
 | 
| Rialian | Tulari 
 | 
| Ricardo Pinto & David Adger | Quya 
 | 
| Richard A. Antonius | Atlango 
 | 
| Richard Adams | Lapine 
 | 
| Richard Kennaway | Ahua 
 | 
| Richard Valler (MDR) | Graatska 
 | 
| Richard Watson | D'ni 
 | 
| Rick Harrison | Esperanto sen Fleksio 
Vorlin 
Zengo 
 | 
| Rick Harrison; et al | Jigwa 
 | 
| Rick Morneau | Ladekwa 
 | 
| Rik Roots | Gevey 
 | 
| Risto Kupsala | Lone 
 | 
| Rob H. | Kushan 
 | 
| Robbie (AKA Zoqaeski) | Qelvietu 
 | 
| Robert | Rúvuk 
 | 
| Robert A. Heinlein | Language of Center, The 
Speedtalk 
 | 
| Robert Eaglestone | Yiirabarhi 
 | 
| Robert Hill | Olijad 
 | 
| Robert Jordan | Old Tongue 
 | 
| Robert Jung | Kel 
Kosi 
 | 
| Robert L. Brown III | Kemilas 
 | 
| Robert L. Vaessen | Hallowese 
 | 
| Robert N. Yetter | Lalortel 
 | 
| Robert Schikowski | Candabrach 
 | 
| Robert Wilson | Kinsi Rorotan 
 | 
| Robin D. Cooper | Aldana 
 | 
| Robin Morton | Hyilté 
 | 
| Rodlox | C-14 
Metes 
Rodlox's Unnamed Conlang 
Serasraes 
 | 
| Roger Espel Llima | Zoinx 
 | 
| Roger Kuiper | Chrodisonian 
Rhan 
Talcas 
 | 
| Roger Kuiper (and Man-Kzin Wars authors) | Kzinti 
 | 
| Roger Mills | Gwr 
Kash 
 | 
| Rolandt Tweehuysen | Spocanian 
 | 
| Ron de Leeuw | Canis 
 | 
| Ronald Kyrmse | Xliponian 
 | 
| Rory | Ålaku 
Cakish 
Koalìns 
Maþ 
Sekponh 
 | 
| Rowland Jones | Hieroglyfic 
 | 
| Rubén Ortega | Jechoire 
 | 
| Ruby Olive Foulk | Americai Speak 
 | 
| Rupert A.H. Barnes | Baanzish 
 | 
| Russian | Hambhukringki 
 | 
| Russlle Walls | Hebret 
 | 
| Ryan Eakins | Ptokan 
 | 
| Sally Caves | Teonaht 
 | 
| Sami Kleit | Thequm 
 | 
| Sampo Taito Louke | Xail 
 | 
| Samuel Fredrickson | Simpla 
 | 
| Sander Dieleman | An'tur 
Feianovedo 
Lemurian 
Pacarian 
 | 
| Sandor Csak | Esiterato 
 | 
| Santo Cilauro, Tom Gleisner, Rob Sitch | Molvanian 
 | 
| Scarisbrick, Joseph | Lips Kith 
 | 
| Schorreel, Thomas | Rivaansa 
 | 
| Scott 'Blade' Hamilton | Ilathid'hi 
Sinnish 
Unstränng 
 | 
| Scott Hutton | Shaelic 
 | 
| Scott MacLagan | Adelic 
 | 
| Scotto Hlad | Regimonti 
Vystoulor 
 | 
| script | Chin'yn-theuk 
 | 
| Sean Bradt | J'ækatá 
 | 
| Sean Hendricks | Uhli 
 | 
| Sean K. Reynolds | Dwarven Pidgin 
Elven 
 | 
| Sean K. Reynolds & Owen K.C. Stephens | Draconic 
 | 
| Seiji Suenaga | Atarel 
 | 
| Shane Hampton | Hänäthlîêr 
Kirda-han 
 | 
| Shane Hodgson | Manaa 
Tymat 
 | 
| Shanya Spiritskunk | SCSL 
 | 
| Sharon Lee, Steve Miller | Liaden 
 | 
| Shawn C. Knight | Korpesk 
Lesko 
Logulos 
Meth 
 | 
| Shiari | Shinoarnii 
 | 
| Shihali Ramichu | Ziotaki 
 | 
| Siewurd S. Wendau | Natu-Khuzdul 
 | 
| Simon Mulder | Fonymfin 
 | 
| Simon Whitechapel | Mhigiwipian 
Yihhian 
 | 
| Sindelka | e2 
 | 
| Skrintha | Lin 
 | 
| Slattery, O'Neil | Glide 
 | 
| Sonja Elen Kisa | Oou 
Toki Pona 
 | 
| Sophia Abraham (Ábrahám Zsófia) aka Mau Rauser | Long Wer 
 | 
| Spence Hill | An'dorian 
 | 
| SPH | Asht 
 | 
| Stefan Koch | Zim 
 | 
| Stefan Lubbersen | Cruons 
Frionske 
Inkliche 
Lusiaquía 
Nedertæl 
Svargó 
 | 
| Steffen M. Turnipseed | Purdik 
 | 
| Steg Belsky | Rokbeigalmki 
 | 
| Stephen Chase Houghton | Magistri Linguio 
 | 
| Stephen Fry & Hugh Laurie | Strom 
 | 
| Stephen Houghton / Paul Bartlett | Latinvlo 
 | 
| Stephen King | High Speech 
 | 
| Stephen Mulraney | Tiemish 
 | 
| Stephen Pearl Andrews | Alwato 
 | 
| Steve Gustafson | Nuirn 
 | 
| Steve Nickolas (Dosius/Usotsuki) | Dosian 
 | 
| Steve Oostrom | Odonien 
 | 
| Steven Collins | Uajiren 
 | 
| Suhardian,aka Mattia Suardi | Progressiva 
 | 
| sUmUs cAcOOnUs | DiLingo 
 | 
| Suzanne Skinner | Exorian 
 | 
| Suzette Haden Elgin | LáAdan 
 | 
| Sven Lotz | Kinfa 
 | 
| Sydney Mathew Willoughby | Alevain 
 | 
| Sylvia Sotomayor | Kélen 
 | 
| T. A. Wiebe | Veltsin 
 | 
| T. Mitchell Pehrson | Idrani 
 | 
| Taelons | Eunoia 
 | 
| taliesin | Taruven 
 | 
| Ted Kloba | Gaciça 
 | 
| Terence Donnelly | Ranamemi 
Vogu 
Zyem 
 | 
| Teresh | Vogukadanë 
 | 
| Terrence Donnelly | Bogomol 
Borg 
Dunnek 
Machi 
 | 
| Tha Original Penrithian Bandanna Kid | Bahasa Tumilenia 
 | 
| The Inrilan Consortium | Inrilan 
 | 
| The Logical Language Group | Lojban 
 | 
| Theodore Carras | Neove 
 | 
| Thomas Leigh | Cho-ba 
Jafo 
Ose 
Tesawa 
 | 
| Thomas McInturf | Dren 
 | 
| Thomas Schorreel | Wapadja 
 | 
| Thomas Slawson | Nari 
 | 
| Thomas Thurman | Nimyad 
 | 
| Thomas Urquhart | Logopandectesion 
 | 
| Thomas Wier | Phaleran 
 | 
| Tim Hall | Old Kandar 
 | 
| Timothy Ingen Housz | Elephant's Memory 
 | 
| Timothy J. Donoghue | Geoglot 
 | 
| Timothy Miller | Ferengi 
Kardasi 
 | 
| Tiogshi Laj | Larenti Tergush 
 | 
| tli-ze | Mineng 
 | 
| Tom | Darmakke 
 | 
| Tom Breton | AllNoun 
 | 
| Tom Corcoran | Rrldha 
 | 
| Tom Curtis | Kvaaplaang 
 | 
| Tom Killingbeck | Êdhchirriad 
Kugzogak 
Pélénne 
Pil'koska 
 | 
| Tom Little (Sêsâmân) | Iltârer 
Proto-Hambah 
 | 
| Tom R. | Shilgne S'drawkab C'navdair 
Zdekkite 
 | 
| Tom Wier | Degaspregos 
 | 
| Tomas Magath | Mjuteità Inglisja 
 | 
| Tommaso Donnarumma | Arden 
Fjinnjikulla 
Len-q?is 
Streich 
 | 
| Tommasso Donnarumma | Anawanda 
 | 
| Toni Keskitalo | Zegzolt 
 | 
| Tony Le | Indo-Nugimian 
 | 
| Tony Senn | Vinlandic 
 | 
| Tony Skags | Alphistian 
 | 
| Torbjoern Andersson | Zurbian 
 | 
| Tregetour Yare | Qa 
 | 
| Trevor Wentworth | Adúlad 
 | 
| Trickster | Primal 
 | 
| Tristan Parker | Di'aleka 
 | 
| Tuomo Sipola | Egren 
Esei 
Ïpetas 
 | 
| Tyler Hogan | Kronokayjin 
 | 
| United States Information Agency | VOA Special English 
 | 
| Unknown | Double Dutch 
Sheng 
Ubbi Dubbi 
 | 
| Ursula K. Le Guin | Kesh 
 | 
| Uskokovic Vuk | Illfillin 
 | 
| Valentin Koulikov | Mua 
 | 
| Van Anderson | Kahan 
 | 
| Various | Ehxduxadiikootu 
 | 
| Victor Medrano | Bonjang 
Jasminese 
Kwaadakw 
L17 
Lilipu 
Viku 
Vling 
Vong 
 | 
| Victor Yuri Gevirtz | Olvardeth 
 | 
| Victoria Fromkin, PhD | Pakuni 
 | 
| Vionau Raitak | Zadri 
 | 
| Vladimir Farber & Matvei Farber | Farlingo 
 | 
| W. John Weilgart, Ph.D. | aUI 
 | 
| Wally Flint | Picture Language 
 | 
| Warmaster | Kaldon 
 | 
| Wendy Ashby and Ross Clark | Glosa 
 | 
| Wesley Parish | Li' Anyerra-Tarah 
Nu Aves Khara-Ansha 
 | 
| Wil Guilford Jr. | Achenu 
 | 
| Wilbur M. Law Beatty | Cosmian 
 | 
| William Annis | Mavod 
 | 
| William James Tychonievich | Grooiman 
 | 
| William S. Annis | Vaior 
 | 
| William W. Patterson | AEP 
 | 
| Wm. Patterson | Mathumisc/Archaic English Project 
 | 
| World Congress of the World Federation of the Deaf | International Sign Language (ISL) 
 | 
| Wyvere | Keldare 
Ko'ilidel 
Kyldil 
Larveson 
Valdiss 
 | 
| Xhin | po'P'kp 
 | 
| Yẃlyan Rott | Nórdicg 
 | 
| Yann Kiraly | Manaki 
 | 
| Yiuel | Dununmi 
 | 
| YongDeok Cho | Mingjiese 
 | 
| Yoon Ha Lee | Naracze 
Tasratal 
Tsuhon 
 | 
| Yoshiko F. McFarland | Earth Language 
 | 
| Yulyan Ròt | Ypsìlònsk 
 | 
| Zach McVaY | Iqalu 
 | 
| Zack Hart | Gomain 
 | 
| Zak Keene | Jaueqao myys 
 | 
| zbihniew | Szkev 
 | 
| Zingjar ë Gud | Heratï 
 | 
| Zoltán Magyar | Romanid 
 | 
| Zylom | Northern Griffin Script 
 |