Caitlyn is a distinctive girls' name in England & Wales, ranking #513 in 2018 with 83 recorded births. The name reached its all-time peak in 2005 with 353 births ranking #144. Since 1996, the popularity has increased by 144.1%. In 2018, approximately 1 in every 3,473 girls born was named Caitlyn. STABLE Recent data shows the name is currently stable.