Kai is a popular boys' name in England & Wales, ranking #72 in 2024 with 735 recorded births. The name reached its all-time peak in 2010 with 1,308 births ranking #56. Since 1996, the popularity has increased by 246.7%. In 2024, approximately 1 in every 378 boys born was named Kai. STABLE Recent data shows the name is currently stable.