Onna is a distinctive girls' name in United States, ranking #6747 in 2008 with 20 recorded births. The name reached its all-time peak in 2015 with 33 births ranking #4376. Since 1996, the popularity has increased by 233.3%. In 2008, approximately 1 in every 94,536 girls born was named Onna. RISING Recent data shows the name is currently rising.