Cathryn is a distinctive girls' name in United States, ranking #2911 in 2010 with 59 recorded births. The name reached its all-time peak in 1996 with 155 births ranking #1172. Since 1996, the popularity has decreased by 61.9%. In 2010, approximately 1 in every 30,124 girls born was named Cathryn. FALLING Recent data shows the name is currently falling.