Ronaldo is a distinctive boys' name in United States, ranking #934 in 2001 with 167 recorded births. The name reached its all-time peak in 1998 with 359 births ranking #552. Since 1996, the popularity has increased by 142.0%. In 2001, approximately 1 in every 11,634 boys born was named Ronaldo. STABLE Recent data shows the name is currently stable.