US Popularity Rank: 10778

Origin: Irish

Meaning: Slender and fair

Caoilinn is a girl’s name of Irish origin. It’s a variant of Caoilfhionn, which combines the Irish words caoil, meaning “slender,” with fionn, meaning “fair.” Caoilfhionn was the name of a sixth-century Irish saint. This beautiful name is sometimes anglicized as Keelin, and often shortened to Keely as a sweet nickname. Alternate spellings include Caoileann and Caoilainn. A famous bearer of this name is Irish writer Caoilinn Hughes.