Lain is a distinctive boys' name in United States, ranking #6344 in 2022 with 14 recorded births. The name reached its all-time peak in 2011 with 25 births ranking #4053. Since 1996, the popularity has increased by 27.3%. In 2022, approximately 1 in every 124,598 boys born was named Lain. RISING Recent data shows the name is currently rising.