Meaning and name origin
Kaydin \ka(y)-din\ as a boy's name is of Arabic origin, and the meaning of Kaydin is "companion". Kaydin is a variant of Kaden (Arabic): also possibly refers to a swamp in Old German, or to an Old English word meaning "round".
Kaydin is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is a comparison of the popularity of the boy name Kaydin and its variant forms. Popular variation forms ranked in the Top 1000/100 are Kayden (#90), Kaiden (#124), Kaden (#171), Cayden (#197), Caden (#198), Caiden (#272) and Kadin. (2014 statistics).