Arnoldo is a distinctive boys' name in United States, ranking #4465 in 2023 with 23 recorded births. The name reached its all-time peak in 1997 with 88 births ranking #1295. Since 1996, the popularity has decreased by 71.6%. In 2023, approximately 1 in every 74,285 boys born was named Arnoldo. RISING Recent data shows the name is currently rising.