Kai is a distinctive girls' name in United States, ranking #791 in 2022 with 358 recorded births. The name reached its all-time peak in 2021 with 371 births ranking #769. Since 1996, the popularity has increased by 311.5%. In 2022, approximately 1 in every 4,578 girls born was named Kai. FALLING Recent data shows the name is currently falling.