Meaning and name origin
Caitlin \ca(it)-lin\ as a girl's 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 variant forms: 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 is a very popular first name for females (#560 out of 4276, Top 13%) but an uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is the baby name popularity of the name Caitlin for girls. Caitlin reached its highest rank of #50 in the U.S. in 1990. (2014 statistics).
Displayed below is a comparison of the popularity of the girl name Caitlin and its variant forms. Popular variation forms ranked in the Top 1000/100 are Katherine (#83), Kaitlyn (#158), Catherine (#170), Katelyn (#172), Caitlyn (#463), Caitlin (#496), Kaylin (#547), Katelynn (#567), Kaitlynn (#928), Katelin, Kaitlin, Caitlynn, Cathleen, Catriona and Cailyn. (2014 statistics).