Kainen is a distinctive boys' name in United States, ranking #1771 in 2017 with 87 recorded births. The name reached its all-time peak in 2018 with 100 births ranking #1634. Since 1996, the popularity has increased by 411.8%. In 2017, approximately 1 in every 21,268 boys born was named Kainen. FALLING Recent data shows the name is currently falling.