Some of the most popular creative works are appealing because of the artificial worlds their authors create. In many of these works, fictional languages are essential to the setting and plot, and often help the author comment on social issues. This encyclopedia examines fictional and fantastic languages in a broad range of literature, films, and television shows, from antiquity to the present. Included are alphabetically arranged entries for such works as: "Acoma", "The Unicom Girl"; "Alien Nation"; "Baudolino"; "A Clockwork Orange"; "Eye of Cat"; "Gulliver's Travels"; "Mork and Mindy"; "The Narrative of Arthur Gordon Pym of Nantucket"; "Nineteen Eighty-Four", "The Sirens of Titan"; "Star Trek"; and "Utopia". Each entry discusses the features of the invented language central to the work and relates it to the film, literary text, or television programme. Entries provide suggestions for further reading, and the encyclopedia closes with a selected bibliography.