The Phaistos Disc is a disk of fired clay from the Minoan palace of Phaistos on the Greek island of Crete, possibly dating to the middle or late Minoan Bronze Age (2nd millennium BC). Its purpose and meaning, and even its original geographical place of manufacture, remain disputed, making it one of the most famous mysteries of archaeology. This unique object is now on display at the archaeological museum of Heraklion.

The disc features 241 tokens, comprising 45 unique signs, which were apparently made by pressing hieroglyphic “seals” into a disc of soft clay, in a clockwise sequence spiraling toward the disc’s center.

Many attempts have been made to decipher the code behind the disc’s signs. While it is not clear that it is a script, most attempted decipherments assume that it is.  Attempts at decipherment are generally thought to be unlikely to succeed unless more examples of the signs are found.

Although the Phaistos Disc is generally accepted as authentic by archaeologists, a few scholars believe that the disc is a forgery or a hoax.