Oona is a distinctive girls' name in United States, ranking #6297 in 1998 with 16 recorded births. The name reached its all-time peak in 2015 with 131 births ranking #1639. Since 1996, the popularity has decreased by 11.1%. In 1998, approximately 1 in every 110,431 girls born was named Oona. FALLING Recent data shows the name is currently falling.