Kaio is a distinctive boys' name in United States, ranking #8050 in 2002 with 8 recorded births. The name reached its all-time peak in 2023 with 26 births ranking #4164. Since 1996, the popularity has decreased by 11.1%. In 2002, approximately 1 in every 242,684 boys born was named Kaio. FALLING Recent data shows the name is currently falling.