Meaning Kelli is a Celtic name for a girl, it means lively. Origin of Kelli Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names Elise Pronunciation 🔊 Listen Kelli Similar Names Kellie Kelleigh Kellyanne Gayle Vivian Viviana Vivienne Allecra Farhah Zosima Year by Year Popularity of Kelli