Kainen is a distinctive boys' name in United States, ranking #1742 in 2019 with 90 recorded births. The name reached its all-time peak in 2018 with 100 births ranking #1634. Since 1996, the popularity has increased by 429.4%. In 2019, approximately 1 in every 19,926 boys born was named Kainen. FALLING Recent data shows the name is currently falling.