<!-- * Rev. William Fulco - (reconstructed, rather than invented) the Aramaic of Jesus --><!-- Describign Fulco as a conlanger is simply not accurate -->A language creator, sometimes referred to as a conlanger (), is a person who invents constructed languages (or "conlangs").
Professional language creators
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
<!-- * Rev. William Fulco - (reconstructed, rather than invented) the Aramaic of Jesus --> <!-- Describign Fulco as a conlanger is simply not accurate -->
- Matt Pearson - Thhtmaa
- David J. Peterson - Dothraki, Valyrian, Kastithanu (Castithan), L'Irathi (Irathient), Indojisnen, Sondiv, Shiväisith, Lishepus, Trigedasleng, Noalath, Inha, Munja'kin
- John H. G. Scott - Baldung (for Archive 81)
- Britton Watkins - Yautja (for Predator: Badlands)
- Wolf Wikeley - Tho Fan
Published international auxiliary language creators
Individuals who have created languages intended for international communication.
- George Boeree: Lingua Franca Nova
- Léon Bollack: Bolak
- Louis Couturat and Louis de Beaufront: Ido language
- Alexander Gode: Interlingua
- Lancelot Hogben: Interglossa
- Otto Jespersen: Novial
- Francis Lodwick: Common Writing
- Jackson Moore: Moss
- François Sudre: Solresol
- Charles Kay Ogden: Basic English
- Giuseppe Peano: Latino sine flexione
- Waldemar Rosenberger: Idiom Neutral
- Johann Martin Schleyer: Volapük
- Kenneth Searight: Sona
- Edgar de Wahl: Interlingue
- John Wilkins:
