The name Ciaran is a boy's name of Irish origin meaning "little dark one". Ciaran and is often added to lists like Irish Baby Names and discussed in our forums with posts like "Rate the Previous Signature!".
From the experts:
Extremely popular in Ireland, Ciaran is also well used in England and is beginning to infiltrate the U.S., more popularly with the phonetic Kieran spelling. An all-around attractive name whose only mild downside might be its similarity to the outmoded female Karen.
Although it was the name of twenty-six saints in Ireland, Ciaran was not used as a secular name there until the 1950s, and then more often in the Anglicized form, Kieran.
Belfast-born actor Ciaran Hinds played Aberforth Dumbledore in Harry Potter and the Deathly Hollows.