Caidyn is a distinctive boys' name in United States, ranking #2352 in 2009 with 55 recorded births. This places Caidyn 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 2011 with 64 births ranking #2081. In 2009, approximately 1 in every 36,060 boys born was named Caidyn. FALLING Recent data shows the name is currently falling.