Meaning Derived from the Irish surname 'Ceallach' meaning 'bright-headed' or 'brave warrior'. Origin of Kelly Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names Marie, Elizabeth, Ann, Anna, Clarissa, Ellison, Gayle, Grace, Jolie, Joy Pronunciation 🔊 Listen Kelly KEL-LEE Similar Names Aoife Kellie Keelyn Keilah Braelyn Tracy Kely Cayley Lucy-May Kimora Year by Year Popularity of Kelly