Reginaldo is a distinctive boys' name in United States, ranking #7717 in 1999 with 8 recorded births. This places Reginaldo in the bottom 34% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2005 with 14 births ranking #5810. In 1999, approximately 1 in every 240,011 boys born was named Reginaldo. FALLING Recent data shows the name is currently falling.