Kaio is a distinctive boys' name in United States, ranking #6446 in 2007 with 13 recorded births. The name reached its all-time peak in 2023 with 26 births ranking #4164. Since 1996, the popularity has increased by 44.4%. In 2007, approximately 1 in every 159,633 boys born was named Kaio. FALLING Recent data shows the name is currently falling.