Nicolai is a distinctive boys' name in United States, ranking #2590 in 2025 with 51 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 121.7%. In 2025, approximately 1 in every 33,492 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.