Kathrynn is a distinctive girls' name in United States, ranking #8245 in 2003 with 13 recorded births. The name reached its all-time peak in 2006 with 16 births ranking #7679. Since 1996, the popularity has increased by 30.0%. In 2003, approximately 1 in every 140,542 girls born was named Kathrynn. FALLING Recent data shows the name is currently falling.