Kaetlyn is a distinctive girls' name in United States, ranking #14195 in 2012 with 7 recorded births. The name reached its all-time peak in 1997 with 57 births ranking #2343. Since 1996, the popularity has decreased by 77.4%. In 2012, approximately 1 in every 251,535 girls born was named Kaetlyn. FALLING Recent data shows the name is currently falling.