Ronaldo is a distinctive boys' name in United States, ranking #1234 in 2012 with 144 recorded births. This places Ronaldo in the top 9% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 359 births ranking #552. Since 1996, the popularity has increased by 108.7%. In 2012, approximately 1 in every 13,171 boys born was named Ronaldo. STABLE Recent data shows the name is currently stable.