Cai is a distinctive boys' name in England & Wales, ranking #650 in 2021 with 56 recorded births. The name reached its all-time peak in 2006 with 192 births ranking #214. Since 1996, the popularity has increased by 21.7%. In 2021, approximately 1 in every 5,268 boys born was named Cai. RISING Recent data shows the name is currently rising.