Kadyn is a distinctive boys' name in United States, ranking #1213 in 2003 with 121 recorded births. The name reached its all-time peak in 2009 with 259 births ranking #836. Since 1996, the popularity has increased by 1,628.6%. In 2003, approximately 1 in every 16,325 boys born was named Kadyn. FALLING Recent data shows the name is currently falling.