Kaithlyn is a distinctive girls' name in United States, ranking #11665 in 2023 with 8 recorded births. The name reached its all-time peak in 2002 with 21 births ranking #5568. Since 1996, the popularity has increased by 60.0%. In 2023, approximately 1 in every 200,331 girls born was named Kaithlyn. FALLING Recent data shows the name is currently falling.