Kai is a popular boys' name in United States, ranking #61 in 2023 with 4,967 recorded births. The name reached its all-time peak in 2022 with 5,366 births ranking #59. Since 1996, the popularity has increased by 1,572.4%. In 2023, approximately 1 in every 344 boys born was named Kai. FALLING Recent data shows the name is currently falling.