Kathrynn is a distinctive girls' name in United States, ranking #8347 in 2013 with 14 recorded births. The name reached its all-time peak in 2006 with 16 births ranking #7679. Since 1996, the popularity has increased by 40.0%. In 2013, approximately 1 in every 125,315 girls born was named Kathrynn. FALLING Recent data shows the name is currently falling.