Nicholai is a distinctive boys' name in United States, ranking #3089 in 2009 with 38 recorded births. The name reached its all-time peak in 2017 with 51 births ranking #2520. Since 1996, the popularity has increased by 192.3%. In 2009, approximately 1 in every 52,192 boys born was named Nicholai. STABLE Recent data shows the name is currently stable.