Oona is a distinctive girls' name in United States, ranking #4912 in 2004 with 27 recorded births. The name reached its all-time peak in 2015 with 131 births ranking #1639. Since 1996, the popularity has increased by 50.0%. In 2004, approximately 1 in every 68,004 girls born was named Oona. FALLING Recent data shows the name is currently falling.