Cailin is a feminine given name of Irish origin, meaning "girl" or "young woman." It is often used in various cultures and can be found in different spellings, such as Cailín. The name has gained popularity in recent years, particularly in English-speaking countries. In addition to its use as a name, Cailin can also refer to various cultural references, including songs and literature. The name embodies a sense of youth and vitality, making it a favored choice for parents naming their daughters.