Nickolai is a distinctive boys' name in United States, ranking #5931 in 1999 with 11 recorded births. The name reached its all-time peak in 2015 with 31 births ranking #3563. Since 1996, the popularity has increased by 83.3%. In 1999, approximately 1 in every 174,553 boys born was named Nickolai. FALLING Recent data shows the name is currently falling.