Delwyn is a distinctive boys' name in United States, ranking #12485 in 2025 with 5 recorded births. The name reached its all-time peak in 2011 with 9 births ranking #8231. Since 1996, the popularity has decreased by 16.7%. In 2025, approximately 1 in every 341,615 boys born was named Delwyn. STABLE Recent data shows the name is currently stable.