Nikolaj is a distinctive boys' name in United States, ranking #7973 in 2017 with 10 recorded births. This places Nikolaj in the bottom 44% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2019 with 19 births ranking #5101. In 2017, approximately 1 in every 185,032 boys born was named Nikolaj. FALLING Recent data shows the name is currently falling.