1) Persian boy name 
Kayvan (also spelled Keyvan, Keivan, or Keywan, کیوان) is a Persian, Zoroastrian masculine given name, also occasionally a surname, meaning Saturn. For example Azar Kayvan the `Zoroastrian` high priest. It is related to the word for Saturn in several old languages, including `Kaimanu` in Sumerian, `Kayamanu` in Akkadian, `Kion` in Syr...