The name Rayan is derived from the ancient Celts and expanded during the 1400-1800 as more Irish people immigrated overseas for work or life. This name grew in popularity in the Arab world as well as in some western European countries. Rayan is the long form for the name Ian or Iainwhich means John. The name Rayan technically means "God is Gracious" (Source: Author's knowledge)
Read more about Rayan: Variations of The Name, Rayan in Persian and Arabic, Rayan in Israel, Rayan in India, Rayann in Old English, Rayan in Persian