List of language creators

A conlanger /ˈkɒnlæŋər/ is a person who invents constructed languages (aka conlangs).

Professional conlangers

Individuals who have been hired to create languages.

Victoria Fromkin - Paku (a.k.a. Pakuni)
Paul Frommer - Na'vi, Barsoomian
Madhan Karky - Kiliki
Marc Okrand - Klingon, Vulcan, Atlantean
Matt Pearson - Thhtmaa
David J. Peterson - Dothraki, Valyrian, Kastithanu (Castithan), L'Irathi (Irathient), Indojisnen, Sondiv, Shiväisith, Lishepus, Trigedasleng, Noalath, Inha, Munja'kin
Wolf Wikeley - Tho Fan

Published international-auxiliary conlangers

Conlangers who have created languages intended for international communication.

Published fictional conlangers

Conlangers whose work has been published in books or other media that they created:

Richard Adams: Lapine, in Watership Down
M.A.R. Barker: Tsolyáni for Tékumel
Hector Berlioz
Marion Zimmer Bradley
Anthony Burgess: Nadsat in A Clockwork Orange and a prehistoric language in Quest for Fire.
Samuel R. Delany
Suzette Doctolero: Enchanta from the Encantadia Saga.
Diane Duane
Suzette Haden Elgin: Láadan, in the Native Tongue series
Václav Havel
Frank Herbert
Hergé
Robert Jordan: The Old Tongue in The Wheel of Time
Ursula K. Le Guin
Barry B. Longyear
George Orwell: Newspeak, in Nineteen Eighty-Four
Christopher Paolini: The Ancient Language in the Inheritance Cycle (Eragon and its sequels)
Lynne Sharon Schwartz: in The Writing on the Wall
J. R. R. Tolkien: more than twenty languages including Quenya, Sindarin, Khuzdul; see Languages constructed by J. R. R. Tolkien
Karen Traviss: Mando'a in the Star Wars expanded universe
Christian Vander
Tad Williams: Higher Singing in Tailchaser's Song
Gene Wolfe: Ascian in The Book of the New Sun

Other notable conlangers

Conlangers whose languages are neither international auxiliary languages nor part of popular media, but are nonetheless significant among enthusiasts, have amassed a notable amount of speakers, or do not fit in other categories:

Sonja Lang: Toki Pona, a minimalist language which has gained a large following and several publications over the years since its creation in 2001.

References

^ ^a ^b Okrent, Arika (2009). In the land of invented languages : Esperanto rock stars, Klingon poets, Loglan lovers, and the mad dreamers who tried to build a perfect language (1st ed.). New York: Spiegel & Grau. ISBN 978-0-385-52788-0. OCLC 321034148.

[:0-1] Okrent, Arika (2009). In the land of invented languages : Esperanto rock stars, Klingon poets, Loglan lovers, and the mad dreamers who tried to build a perfect language (1st ed.). New York: Spiegel & Grau. ISBN 978-0-385-52788-0. OCLC 321034148.

[1]