Ronaldo is a distinctive boys' name in United States, ranking #1215 in 2013 with 148 recorded births. The name reached its all-time peak in 1998 with 359 births ranking #552. Since 1996, the popularity has increased by 114.5%. In 2013, approximately 1 in every 12,779 boys born was named Ronaldo. STABLE Recent data shows the name is currently stable.