Marni is a distinctive girls' name in United States, ranking #6583 in 2002 with 17 recorded births. The name reached its all-time peak in 2025 with 29 births ranking #4718. Since 1996, the popularity has decreased by 15.0%. In 2002, approximately 1 in every 105,695 girls born was named Marni. RISING Recent data shows the name is currently rising.