Ryun is a distinctive boys' name in United States, ranking #9421 in 1998 with 6 recorded births. The name reached its all-time peak in 1996 with 13 births ranking #4833. Since 1996, the popularity has decreased by 53.8%. In 1998, approximately 1 in every 318,553 boys born was named Ryun. STABLE Recent data shows the name is currently stable.