Onna is a distinctive girls' name in United States, ranking #7420 in 1998 with 13 recorded births. The name reached its all-time peak in 2015 with 33 births ranking #4376. Since 1996, the popularity has increased by 116.7%. In 1998, approximately 1 in every 135,915 girls born was named Onna. RISING Recent data shows the name is currently rising.