Keylin is an uncommon, unisex given name of Welsh origin. It means "leader" or "chief." The name gained prominence during the Victorian era but has since become quite rare. Keylin is typically spelled without a 'w' to differentiate it from similar names like Kevin or Keelin. It lends itself well to various nicknames, such as Kay, Lyn, and Key.
"Keylin appears to have gained significant popularity as a baby name, with over one thousand births recorded between 1997 and 2023. The highest peak occurred recently in 2022 with 83 births."