Kaio is a distinctive boys' name in United States, ranking #6492 in 2003 with 11 recorded births. The name reached its all-time peak in 2023 with 26 births ranking #4164. Since 1996, the popularity has increased by 22.2%. In 2003, approximately 1 in every 179,570 boys born was named Kaio. FALLING Recent data shows the name is currently falling.