Marykatherine is a distinctive girls' name in United States, ranking #6470 in 2025 with 18 recorded births. The name reached its all-time peak in 2004 with 34 births ranking #4151. Since 1996, the popularity has decreased by 40.0%. In 2025, approximately 1 in every 89,293 girls born was named Marykatherine. RISING Recent data shows the name is currently rising.