Martian language is the nickname of unconventional representation of Chinese characters online.

Martian language may also refer to:

• A hypothetical alien language that dwellers of Mars would use
  • Any of several alien language in science fiction
    • Barsoomian language, the Martian language of Edgar Rice Burroughs
  • Fake "Martian language" fabricated by Hélène Smith
    • Le Langage martien (French: The Martian Language), a 1901 book by Victor Henry about the language of Helene Smith

• Linguistics in science fiction

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