Kathlynn is a distinctive girls' name in United States, ranking #16292 in 2020 with 5 recorded births. The name reached its all-time peak in 2003 with 15 births ranking #7392. Since 1996, the popularity has decreased by 28.6%. In 2020, approximately 1 in every 323,102 girls born was named Kathlynn. FALLING Recent data shows the name is currently falling.