Oona is a distinctive girls' name in United States, ranking #7600 in 1999 with 13 recorded births. The name reached its all-time peak in 2015 with 131 births ranking #1639. Since 1996, the popularity has decreased by 27.8%. In 1999, approximately 1 in every 136,445 girls born was named Oona. FALLING Recent data shows the name is currently falling.