Meaning Kaci is variant of the English "Casey" and means "descendant of the vigilant one". Origin of Kaci Celtic , Irish Popular Middle Names Michelle, Leigh, Marie, Mikaela, Skye, Xoe, Ann, Anne, Elle, Emilee Pronunciation 🔊 Listen Kaci Ka-ci Similar Names Jyllina Fallon Dorianna Tariyn Louhi Loviisa Olaug Dorice Patmanjiri Torhild Year by Year Popularity of Kaci