Cailen is a unisex name of English origin. It is pronounced as KAY-lin (/keɪˈlɪn/). This name is a variation of the name Cailin. In recent years, Cailen has been a moderately popular choice for parents in the United States. While its popularity has fluctuated over time, it consistently ranks within the top 15,000 names for newborns. The name Cailen carries a sense of strength and uniqueness, making it an appealing choice for parents looking for a gender-neutral option. Its English origin lends it familiarity and versatility, allowing it to fit well with various cultural backgrounds and naming traditions.