Oona is a distinctive girls' name in United States, ranking #4863 in 2002 with 25 recorded births. The name reached its all-time peak in 2015 with 131 births ranking #1639. Since 1996, the popularity has increased by 38.9%. In 2002, approximately 1 in every 71,873 girls born was named Oona. FALLING Recent data shows the name is currently falling.