Regulo is a distinctive boys' name in United States, ranking #13950 in 2007 with 5 recorded births. This places Regulo in the bottom 3% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1999 with 5 births ranking #11240. In 2007, approximately 1 in every 415,047 boys born was named Regulo. STABLE Recent data shows the name is currently stable.