Kathryn is a distinctive boys' name in United States, ranking #10802 in 2005 with 6 recorded births. This places Kathryn in the bottom 19% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2004 with 18 births ranking #4691. In 2005, approximately 1 in every 332,858 boys born was named Kathryn. RISING Recent data shows the name is currently rising.