Kaleigh /ka-lei-gh/ [2 sylls.] as a name for girls is of Greek, Irish and Gaelic derivation, and the meaning of Kaleigh is beautiful, lovely; slim and fair; slender. Kaleigh is a version of Callie (Greek). Kaleigh is also a variant of Cayla (Irish, Gaelic). Kaleigh is also used as a form of Kaylee (Gaelic).