Arnoldo is a distinctive boys' name in United States, ranking #1514 in 2000 with 79 recorded births. This places Arnoldo in the top 12% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 88 births ranking #1295. In 2000, approximately 1 in every 24,860 boys born was named Arnoldo. RISING Recent data shows the name is currently rising.