
Enochian is an occult language or languages, claimed to be angelic, recorded in the private journals of John Dee and his colleague Edward Kelley in late 16th-century England. Kelley was a spirit medium who worked with Dee in his magical investigations. The men claimed that the language was revealed to them by the Enochian angels. The language is integral to the practice of Enochian magic.

Fictional languages are a subset of constructed languages, and are distinct from the former in that they have been created as part of a fictional setting. Typically they are the creation of one individual, while natural languages evolve out of a particular culture or people group. Fictional languages are also distinct from natural languages in that the former do not have native speakers.

Furby is an American electronic robotic toy that was originally released in 1998 by Tiger Electronics. It resembles a hamster or owllike creature and went through a period of being a "must-have" toy following its holiday season launch, with continual sales until 2000. Over 40 million Furbies were sold during the three years of its original production, with 1.8 million sold in 1998, and 14 million in 1999. Its speaking capabilities were translated into 24 languages.
Interlac is a fictional language used by characters of the United Planets in stories set in the 30th century of the DC Comics universe, especially stories about the Legion of Super-Heroes. Although the characters are said to be conversing in this language, dialog is presented to the reader in English. Interlac text is sometimes depicted visually using the Interlac alphabet as a simple one-to-one substitution cipher for the 26 letters of the English alphabet and 10 numerals.

Talossa, also known as the Kingdom of Talossa, is one of the earliest micronations—founded in 1979 by then-14-year-old Robert Ben Madison of Milwaukee and at first confined to his bedroom; he adopted the name after discovering that the word means "inside the house" in Finnish. Among the first such projects still maintained, it has kept up a web presence since 1995. Its internet and media exposure since the late 1990s contributed to the appearance of other subsequent internet micronations.

Zangezi, or Zangezi: A Supersaga in 20 Planes, is a futurist poem-play by Russian, later Soviet, poet, writer and scholar Velimir Khlebnikov.

Zaum are the linguistic experiments in sound symbolism and language creation of Russian Futurist poets such as Velimir Khlebnikov and Aleksei Kruchenykh. Zaum is a non-referential phonetic entity with its own ontology. The language consists of neologisms that mean nothing. Zaum is a language organized through phonetic analogy and rhythm. Zaum literature cannot contain any onomatopoeia or psychopathological states.