Kainan is a distinctive boys' name in United States, ranking #5156 in 2003 with 15 recorded births. The name reached its all-time peak in 2018 with 72 births ranking #2020. Since 1996, the popularity has increased by 66.7%. In 2003, approximately 1 in every 131,685 boys born was named Kainan. FALLING Recent data shows the name is currently falling.