Kaidyn is a distinctive boys' name in United States, ranking #1186 in 2015 with 156 recorded births. This places Kaidyn in the top 8% 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 2015, approximately 1 in every 12,284 boys born was named Kaidyn. FALLING Recent data shows the name is currently falling.