Baby Names Boy Names Meaning of the Name Llewellyn Updated January 12, 2026 by Jennifer M. Llewellyn Gender: Male Origin: Welsh Meaning: Leader ♥ Add to my Namelist What is the meaning of the name Llewellyn? The name Llewellyn is primarily a male name of Welsh origin that means Leader. People who like the name Llewellyn also like: Gabriel, Alexander, Oliver, Declan, Lachlan, Liam, Elijah, Adelaide, Genevieve, Charlotte, Luna, Lucy, Evelyn, Gwendolyn Names like Llewellyn: Leni, Leonia, Lyn, Lolonyo, Loman, Luma, Luana, Leanna, Lona, Lanie, Liwanu, Louane, Li Mei, Lan, Len, Leone, Lin, Lalan, Leon, Lynna, Lion, Lainey, Lana, Lilianna, Lowen, Lanai, Leoma, Lono, Lumi, Leimomi Stats for the Name Llewellyn Llewellyn is currently not in the top 100 on the Baby Names Popularity Charts Llewellyn is currently not ranked in U.S. births