The name Arlen is of Gaelic origin and means "pledge" or "oath". It is a unique and charming name that is not very common, making it stand out among other names. Arlen is often associated with individuals who are creative, artistic, and deeply spiritual. People named Arlen are known for their compassionate nature, strong intuition, and ability to connect with others on a profound level. Overall, Arlen is a beautiful and meaningful name that carries a sense of depth and authenticity.