Kain is a distinctive boys' name in United States, ranking #1398 in 2019 with 127 recorded births. The name reached its all-time peak in 2016 with 180 births ranking #1093. Since 1996, the popularity has increased by 51.2%. In 2019, approximately 1 in every 14,121 boys born was named Kain. STABLE Recent data shows the name is currently stable.