Ronaldo is a distinctive boys' name in United States, ranking #1060 in 2008 with 179 recorded births. The name reached its all-time peak in 1998 with 359 births ranking #552. Since 1996, the popularity has increased by 159.4%. In 2008, approximately 1 in every 11,396 boys born was named Ronaldo. STABLE Recent data shows the name is currently stable.