Ronaldo is a distinctive boys' name in United States, ranking #787 in 2006 with 264 recorded births. The name reached its all-time peak in 1998 with 359 births ranking #552. Since 1996, the popularity has increased by 282.6%. In 2006, approximately 1 in every 7,785 boys born was named Ronaldo. STABLE Recent data shows the name is currently stable.