Ronaldo is a distinctive boys' name in United States, ranking #1234 in 2012 with 144 recorded births. 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.