Undeciphered languages Etruscan Guanche Iberic language Linear A (Minoan script) Old European Script (Also known as "the Vinca alphabet"; its status as writing is disputed) Pictish language The language of the Phaistos Disk Rongo rongo The language of the Voynich Manuscript (Possibly a meaningless hoax.) Partially deciphered languages Maya Incan Quipus Deciphered languages Cuneiform (Sumerian) Ancient Egyptian Linear B (Minoan script) Sumerian language
