Kayvan (also spelled Keyvan, Kayvon, Kaivon, Keivan, Kaywan, Kavon, Kevan, or Kaevon; Persian: کیوان) is a Persian masculine given name denoting the planet Saturn.[1][2][3] It is related to the word for Saturn in several old languages, including Kaimanu[4] in Sumerian, Kajamānu[5][6] in Akkadian, Kewwān in Syriac,[7] and "Kewan" (kywʾn')[8] in Middle Persian. That a 16th-century high priest of Stakhr was named Azar Kayvan suggests that "Kayvan" was used as a name for a person in Iran as early as that time, particularly among followers of Zoroastrianism. To date "Kayvan" is a popular name among families following Zoroastrianism. Kayvan is distinct from the similar Persian word Kayhan, meaning "universe", also used as a masculine given name. To English speakers, the spelling Kayvon is closest to the Persian pronunciation, [keivɒːn].
"Saturday", the day of Saturn, finds its Classical Persian equivalent in "Keyvānshid".[9]