Nikolai I of Russia (Emperor of Russia); Nikolai II of Russia (last Emperor of Russia); Nikolai Antropov (ice hockey player); Nikolay Davydenko (Russian tennis player); Nikolai Gogol (Russian dramatist/novelist); Nikolai Khabibulin (ice hockey player); Prince Nikolai of Denmark (Danish royalty); Nikolai Lobachevsky (Russian mathematician); Nicholai Olivia “Nicky” Hilton (socialite)
