Cai is a distinctive boys' name in United States, ranking #1816 in 2015 with 82 recorded births. The name reached its all-time peak in 2022 with 108 births ranking #1612. Since 1996, the popularity has increased by 1,266.7%. In 2015, approximately 1 in every 23,369 boys born was named Cai. FALLING Recent data shows the name is currently falling.