Kyrin is a modern American spelling of Kieran, from the Irish Ciarán, a diminutive of ciar, so it means "little dark one" or "dark-haired". The K and y give it the same contemporary look as Kyler and Kyrie while keeping the Irish sound. Kyrin ranked number 3259 in 2000, reached a best rank of 1206 in 2017 and has slipped back to number 1857 in 2025, with 85 boys given the name.