Kaidyn is a distinctive boys' name in United States, ranking #2965 in 2003 with 33 recorded births. This places Kaidyn in the top 23% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2014 with 190 births ranking #1051. In 2003, approximately 1 in every 59,857 boys born was named Kaidyn. FALLING Recent data shows the name is currently falling.