Katelyn \k(a)-tel-yn, kat(e)-lyn\ as a girl's name is pronounced KAYT-len. It is of English origin. Alternate form of Caitlin, an Irish form of Katherine. Kateline is a medieval English form. See also Kaitlin.

Katelyn has 9 variant forms: Katelin, Kateline, Katelinn, Katelynn, Katlin, Katlyn, Katlynn, Katlynne and Kitlyn.

Baby names that sound like Katelyn are Katelan, Catelyn, Kathlyn and Katilyn.