Sedjes is an ancient Egyptian cartouche "name" for a king (pharaoh), who is said to have ruled during the 3rd Dynasty (Old Kingdom period).

[1] In the 19th century it was thought by Egyptologists and historians to be the name of a king, because the scribes had placed the word sedjes inside a royal cartouche.

But as knowledge about Ancient Egyptian phrasing and grammars advanced, scholars realized its true meaning: sedjes means "omitted" or "missing" with the scribes using the word as a pseudonym, replacing a now illegible name of a king.

They encircled it with a royal cartouche to mark it as a king's name, but following generations of scribes erroneously took it as the actual birth name of the to-be listed king.

Today, it is passionately disputed which king of the 3rd Dynasty was meant to be denoted in cartouche No.