Ronaldo is a distinctive boys' name in United States, ranking #1164 in 2015 with 160 recorded births. The name reached its all-time peak in 1998 with 359 births ranking #552. Since 1996, the popularity has increased by 131.9%. In 2015, approximately 1 in every 11,977 boys born was named Ronaldo. STABLE Recent data shows the name is currently stable.