Kacey \k(a)-cey\ as a girl's name (also used as boy's name Kacey), is a variant of Acacia (Greek), Casey (Irish, Gaelic) and Kacie (American), and the meaning of Kacey is "thorny tree; alert, watchful".

The baby name Kacey sounds like Kasey, Kaycey, Kacy, Kacee, Kace, Cacey and Kascey. Other similar baby names are Kaley, Dacey, Katey, Jacey, Lacey, Macey and Tacey.