Kain is a distinctive boys' name in United States, ranking #1136 in 2017 with 168 recorded births. The name reached its all-time peak in 2016 with 180 births ranking #1093. Since 1996, the popularity has increased by 100.0%. In 2017, approximately 1 in every 11,014 boys born was named Kain. STABLE Recent data shows the name is currently stable.