Meaning Used in the Irish and English language. It derived from the Celtic teg meaning 'pretty, fair'. Origin of Teagan Celtic , Irish Popular Middle Names Marie, Rose, Elizabeth, Grace, Rae, Nicole, Olivia, Ann, Mae, Lily Pronunciation 🔊 Listen Teagan TEE-gan Similar Names Teagan-Trace Shayla Tara Keely Roisin Fiona Meabh Murron Arlene Aerin Year by Year Popularity of Teagan