Ronaldo is a distinctive boys' name in United States, ranking #772 in 2002 with 224 recorded births. The name reached its all-time peak in 1998 with 359 births ranking #552. Since 1996, the popularity has increased by 224.6%. In 2002, approximately 1 in every 8,667 boys born was named Ronaldo. STABLE Recent data shows the name is currently stable.