Llewelyn is a distinctive boys' name in United States, ranking #6689 in 2022 with 13 recorded births. This places Llewelyn in the top 47% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2024 with 23 births ranking #4495. In 2022, approximately 1 in every 134,183 boys born was named Llewelyn. RISING Recent data shows the name is currently rising.