Kaylie is a variant of Kaylee, a modern American blend of Kay and the fashionable ending -lee that has no fixed meaning; some parents tie it to the Irish céilí, "a gathering with music and dance", or treat it as a pet form of Kayla. The spelling with -ie gives it a softer, more vintage look than Kaylee. Kaylie ranked number 380 in 2000, peaked at number 281 in 2006 and dropped out of the top 1000 in 2021; it stands at number 1454 in 2025.