Caitlyn is a distinctive girls' name in England & Wales, ranking #1315 in 2025 with 24 recorded births. The name reached its all-time peak in 2005 with 353 births ranking #144. Since 1996, the popularity has decreased by 29.4%. In 2025, approximately 1 in every 10,553 girls born was named Caitlyn. STABLE Recent data shows the name is currently stable.