Caitlyn is a distinctive girls' name in England & Wales, ranking #686 in 1996 with 34 recorded births. This places Caitlyn in the top 14% of ranked UK girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2005 with 353 births ranking #144. In 1996, approximately 1 in every 8,706 girls born was named Caitlyn. STABLE Recent data shows the name is currently stable.