Kaidyn is a distinctive boys' name in United States, ranking #2178 in 2004 with 54 recorded births. This places Kaidyn in the top 16% 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 2004, approximately 1 in every 36,756 boys born was named Kaidyn. FALLING Recent data shows the name is currently falling.