Meaning and Name Origin
Caitlin \ca(it)-lin\ as a girls' name is pronounced KATE-lin, kat-LEEN, KOIT-leen, KATH-leen. It is of Old French and Greek origin, and the meaning of Caitlin is "pure". Caitlín is the Irish Gaelic form of Cateline, which is the Old French form of Katherine, whose source is the Greek name Aikaterine. See also Catherine.
Caitlin▲ has 53 variants: Caelin, Caelyn, Caetlin, Cailen, Cailene, Cailyn▼, Cailynn, Cait, Caiti, Caitie, Caitilin, Caitlan, Caitland, Caitlandt, Caitlann, Caitlen, Caitlinn, Caitlyn▲, Caitlyne, Caitlynn▼, Caitrin, Caity, Calen, Calin, Calyn, Calynn, Catelan, Cateline, Catelinn, Catelyn, Catelynn, Catlain, Catlin, Catline, Catlyn, Catlynn, Catriona, Cayelin, Caylen, Caylin, Caylyn, Kaitlan, Kaitlann, Kaitlin▼, Kaitlinn, Kaitlyn▲, Kaitlynn▼, Katelan, Katelin▼, Katelyn▲, Katelynn▲, Kayelin and Kayelyn.
Caitlin▲ has 31 more alternative forms via Cateline, Catherine, Katherine: Caitey, Caitria, Caitrine, Caitrinn, Caitriona, Carin, Carrin, Catalin, Catalina▲, Cataline, Cathelin, Cathi, Cathie▼, Cathline, Cati, Catia, Catie, Catina, Catlaina, Catlina, Catrin, Catrina▼, Catrine, Kaitie, Kaitlinne, Kaitrin, Kaitrine, Kaitrinn, Katalin, Katline and Kaylin▲.
Caitlin is a very prominent first name for women (#560 out of 4276, Top 13%) but an unusual last name for all people. (2000 U.S. Census)
Charted below is the baby name popularity of Caitlin for girls. Caitlin entered the list in 1970-1979 and reached its peak rank of #50 in the U.S. in the year 1990, and is presently at #496. (2014 Birth Statistics)
Below is a charted comparison of the usage of the girl name Caitlin and associated names. Popular alternative forms of Caitlin (#496 the previous year) listed in the Top 1000 are Katherine (#83 the previous year), Kaitlyn (#158), Catherine (#170), Katelyn (#172), Catalina (#365), Caitlyn (#463), Kaylin (#547), Katelynn (#567), Kaitlynn (#928), Kaitlin, Katelin, Catina, Cathi, Caitlynn, Cathie, Cathleen, Catrina, Cailyn and Catriona. Usage of these girl names was at its highest in 2000 and is now much less, with versions like Kaitlin, Kaitlynn, Cailyn, Katelin and Cathleen falling out of style. The most fashionable baby names in this compilation are Catalina (#365), Katelyn (#172), Kaitlyn (#158), Kaylin (#547) and Caitlyn (#463), with Catalina going through a resurgence in popularity. (2014 Birth Statistics)