Kainen is a distinctive boys' name in United States, ranking #2285 in 2015 with 58 recorded births. The name reached its all-time peak in 2018 with 100 births ranking #1634. Since 1996, the popularity has increased by 241.2%. In 2015, approximately 1 in every 33,039 boys born was named Kainen. FALLING Recent data shows the name is currently falling.