Marni is a distinctive girls' name in United States, ranking #6130 in 2022 with 20 recorded births. This places Marni in the top 35% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 29 births ranking #4718. In 2022, approximately 1 in every 81,938 girls born was named Marni. RISING Recent data shows the name is currently rising.