Arnoldo is a distinctive boys' name in United States, ranking #5895 in 2022 with 15 recorded births. The name reached its all-time peak in 1997 with 88 births ranking #1295. Since 1996, the popularity has decreased by 81.5%. In 2022, approximately 1 in every 116,292 boys born was named Arnoldo. RISING Recent data shows the name is currently rising.