Kiyan is a Persian name, a spelling of Kian, which refers to the legendary Kayanian kings of ancient Iran and means "king" or "royal"; in Irish usage Kian is instead a form of Cian, "ancient". The Y spelling is common among Iranian and Kurdish families. In the United States Kiyan has hovered between number 1300 and 1600 for a decade and reached number 1076 in 2025, its best rank so far.