Ronaldo is a distinctive boys' name in United States, ranking #1163 in 2011 with 154 recorded births. The name reached its all-time peak in 1998 with 359 births ranking #552. Since 1996, the popularity has increased by 123.2%. In 2011, approximately 1 in every 12,331 boys born was named Ronaldo. STABLE Recent data shows the name is currently stable.