Nicolai is a distinctive boys' name in United States, ranking #2998 in 1999 with 28 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 21.7%. In 1999, approximately 1 in every 68,575 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.