Onna is a distinctive girls' name in United States, ranking #8736 in 2025 with 12 recorded births. This places Onna in the bottom 49% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 33 births ranking #4376. Since 1996, the popularity has increased by 100.0%. In 2025, approximately 1 in every 133,939 girls born was named Onna. RISING Recent data shows the name is currently rising.