Nikolai

Nikolai or Nikolay is an East Slavic variant of the masculine name Nicholas. It may refer to:

Royalty

 * Nicholas I of Russia (1796–1855), or Nikolay I, Emperor of Russia from 1825 until 1855
 * Nicholas II of Russia (1868–1918), or Nikolay II, last Emperor of Russia, from 1894 until 1917
 * Prince Nikolai of Denmark (born 1999)

Nikolai

 * Nikolai Aleksandrovich (disambiguation) or Nikolay Aleksandrovich, several people
 * Nikolai Antropov (born 1980), Kazakh former ice hockey winger
 * Nikolai Berdyaev (1874–1948), Russian religious and political philosopher
 * Nikolai Bogomolov (born 1991), Russian professional ice hockey defenceman
 * Nikolai Bukharin (1888–1938), Bolshevik revolutionary and Soviet politician
 * Nikolai Bulganin (1895–1975), Soviet politician and minister of defence
 * Nikolai Chernykh (1931–2004), Russian astronomer
 * Nikolai Dudorov (1906–1977), Soviet politician
 * Nikolai Dzhumagaliev (born 1952), Soviet serial killer
 * Nikolai Goc (born 1986), German ice hockey player
 * Nikolai Gogol (1809–1852), Russian dramatist and novelist
 * Nikolai Fraiture (born 1978) American bassist for The Strokes
 * Nikolai Khabibulin (born 1973), Russian former ice hockey goaltender
 * Nikolai Kinski (born 1976), film actor
 * Nikolai Kotlyar (1935–2003), Soviet engineer, maritime specialist and politician
 * Nikolai Kulemin (born 1986), Russian ice hockey winger
 * Nikolai Lobachevsky (1792–1856), Russian mathematician and geometer
 * Nikolai Lukashenko (born 2004), third son of Alexander Lukashenko, the president of Belarus
 * Nikolai Medtner (1880–1951), Russian composer and pianist
 * Nikolai Melnikov (born 1948), Soviet Olympic champion water polo player
 * Nikolai Myaskovsky (1881–1950), Russian composer
 * Nikolai Novosjolov (born 1980), Estonian fencer
 * Nikolai Onoprienko (1911–1979), Soviet Red Army colonel
 * Nikolai Pegov (1905–1991), Soviet official and diplomat
 * Nikolai Pozdneev (1930–1978), Russian painter
 * Nikolai Przhevalsky (1839–1888), Russian geographer and explorer
 * Nikolai Rimsky-Korsakov (1844–1908), Russian composer
 * Nikolai Rubinstein (1835–1881), Russian painter, conductor and composer
 * Nikolai Ryzhkov (1929-2024), Russian politician
 * Nikolai Shchelokov (1910–1984), Soviet statesman and army general
 * Nikolai Slichenko (1934–2021), Soviet and Russian singer, actor, and theatre director
 * Nikolai Tanayev (1945–2020), Kyrgyz politician
 * Nikolai Tcherepnin (1873–1945), Russian composer, pianist, and conductor
 * Nikolai Tikhonov (writer) (1896–1979), Soviet writer
 * Nikolai Tikhonov (1905–1997), Russian politician
 * Nikolai Timkov (1912–1993), Russian painter
 * Nikolai Topor-Stanley (born 1985), Australian footballer
 * Nikolai Valuev (born 1973), Russian boxer and world heavyweight champion
 * Nikolai Vavilov (1887–1943), Russian botanist and geneticist
 * Nikolai Volkoff (1947–2018), professional WWF wrestler
 * Nikolai Yezhov (1895–1940), head of NKVD and perpetrator of the Great Purge
 * Nikolai Zherdev (born 1984), Russian ice hockey player

Nikolay

 * Nikolay Baskov (born 1976), Russian singer
 * Nikolay Davydenko (born 1981), professional tennis player
 * Nikolay Dollezhal (1899–2000), Soviet nuclear reactor designer, head of NIKIET from 1952–1986
 * Nikolay Epshtein (1919–2005), Soviet ice hockey coach
 * Nikolay Pechalov (born 1970), Olympic and World champion in weightlifting
 * Nikolay Peskov (born 1990), Russian army veteran
 * Nikolay Rastorguev (born 1957), lead singer of the Russian group Lyube
 * Nikolay Shubin (born 1956), Georgian-born Russian serial killer

Other uses

 * Nikolai, Alaska, a city in the United States
 * Nikolai Airport, an airport serving Nikolai, Alaska
 * Nikolai (vodka), a brand of vodka