Google can find many things. Use it wisely.

List of constructed languages
https://en.wikipedia.org/wiki/List_of_constructed_languages

Film
- Atlantean created by Marc Okrand for the film Atlantis: The Lost Empire.
- Barsoomian, the language of the Martians in the 2012 film John Carter based on Edgar Rice Burroughs' novels.
- Kilikili, the language spoken by the Kalakeyas in the film Baahubali: The Beginning. [3]
- Klingon (tlhIngan Hol), in the Star Trek films and television series, created by Marc Okrand.
- Ku, a fictional African language in the 2005 film The Interpreter.
- Na'vi, the fictional language spoken by the Na'vi in Avatar, created by Paul Frommer.
- Parseltongue, the 'language of the snakes' in the Harry Potter series.
- Tenctonese from the Alien Nation film and television series, created by Van Ling and Kenneth Johnson.
- Minionese from the film Despicable Me, Created by Chris Renaud & Pierre Coffin


Television
- Dothraki, created by David J. Peterson for the TV series Game of Thrones (based on the novel series A Song of Ice and Fire by George R. R. Martin).
- Trigedasleng created by David J. Peterson for The 100.
- Enchanta, in the Encantadia and Etheria television series in the Philippines, created by the head writer Suzette Doctolero.
- Goa'uld, the galactic lingua franca from Stargate SG-1, supposedly influenced Ancient Egyptian.
- Pakuni, the language of the Pakuni from the Land of the Lost television series and film.
- The Valyrian languages, created by David J. Peterson for the TV series Game of Thrones (based on the novel series A Song of Ice and Fire by George R. R. Martin).
- Vulcan language from Star Trek. Further developed by fans as Golic Vulcan.




7 Most Popular Invented Languages in Film
http://www.omniglot.com/language/articles/filmlanguages.htm

Fictional Languages in Film and Television
https://www.academia.edu/12472592/Fictional_Languages_in_Film_and_Television?auto=download

7 fictional languages from literature and film that you can learn
https://www.mnn.com/lifestyle/arts-culture/stories/7-fictional-languages-from-literature-and-film-that-you-can-learn

11 fictional languages created for movies and books
https://www.msn.com/en-za/entertainment/movies/11-fictional-languages-created-for-movies-and-books/ar-BBoqckA