Alexey Nikolaev or Aleksey Nikolaev may refer to:

• Alexey Nikolaev (archer) (born 1987), Russian archer
• Aleksey Nikolaev (footballer born 1979), Russian-Uzbekistan footballer for FK Samarqand-Dinamo
• Aleksei Nikolaev (referee) (born 1971), Russian football referee
• Alexey Grigoryevich Nikolayev, Soviet Army officer and Hero of the Soviet Union
• Aleksei Lvovich Nikolayev (born 1985), Russian footballer for FC Torpedo Armavir
• Aleksei Yuryevich Nikolayev (born 1977), Russian football midfielder for FC Znamya Truda Orekhovo-Zuyevo
• Aleksey Nikolaev (wrestler), Belarussian freestyle wrestler

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