Kayley is a common name often used for girls. It has various spellings, including "Kailie" and "Kailey." The name is of American origin and is believed to be a modern variation of the name "Cailin," which means "girl" in Irish. People named Kayley are often described as creative and friendly. The name has gained popularity in recent years, particularly in the United States. It is sometimes associated with positive traits such as kindness and enthusiasm, making it a favored choice among parents for their daughters.