Nikolai is a moderately popular boys' name in United States, ranking #473 in 2018 with 614 recorded births. The name reached its all-time peak in 2016 with 639 births ranking #480. Since 1996, the popularity has increased by 648.8%. In 2018, approximately 1 in every 2,957 boys born was named Nikolai. STABLE Recent data shows the name is currently stable.