Kaio is a distinctive boys' name in United States, ranking #10454 in 1998 with 5 recorded births. The name reached its all-time peak in 2023 with 26 births ranking #4164. Since 1996, the popularity has decreased by 44.4%. In 1998, approximately 1 in every 382,264 boys born was named Kaio. FALLING Recent data shows the name is currently falling.