Caitlyn is a distinctive girls' name in England & Wales, ranking #749 in 2019 with 51 recorded births. The name reached its all-time peak in 2005 with 353 births ranking #144. Since 1996, the popularity has increased by 50.0%. In 2019, approximately 1 in every 5,491 girls born was named Caitlyn. STABLE Recent data shows the name is currently stable.