67%RatingSave Gender Feminine Usage English (Modern) Pronounced Pron. KAY-lin [key·IPA] Meaning & HistoryExpand Links Variant of Kaylyn. Related NamesFamily Tree·Details VariantsCailyn, Kaelyn, Kailyn, Kalyn, Kaylin, Kaylyn, Kaylynn, Cailin PopularityDetails Last ranked #908 in 2019 England and Wales Last ranked #938 in 2013 United States