Baby Names Boy Names Meaning of the Name Llewellyn Updated April 13, 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: Alexander, Lachlan, Elijah, Liam, Lucas, Declan, Oliver, Evelyn, Guinevere, Charlotte, Genevieve, Adelaide, Lucy, Luna Names like Llewellyn: Lono, Len, Lainey, Lani, Lanai, Layne, Loneen, Leona, Lenny, Leinani, Lanu, Lolonyo, Laine, Lalana, Lian, Llywelyn, Lynna, Lonny, Lion, Linen, Leena, Linnea, Leimomi, Lana, Laina, Liam, Lalan, Loman, Li Mei, Lonnie 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