The name Kaytlyn is a modern and creative variation of the traditional Irish name Caitlin, which itself is derived from the Old French name Cateline, a form of Catherine. Pronounced as KAYT-lin (/keɪt lɪn/), Kaytlyn has gained popularity in English-speaking countries, particularly in the United States. The name has seen fluctuating usage over the years, peaking in 1991 with 71 occurrences ranking it at 1958. Although its popularity has waned slightly in recent years—with only 11 occurrences ranking it at 8951 in 2023—it remains a beloved choice for parents seeking a unique yet familiar name for their daughters. Associated with qualities such as grace and purity, Kaytlyn and its variations like Caitlin and Kaitlyn continue to be cherished options that blend tradition with contemporary flair.