Nikolai Alexeyev
Nikolai Alexejew is the name of the following people:
- Nikolai Alexejew (conductor) , Russian conductor
- Nikolai Alexandrowitsch Alexejew (politician) (1852-1893), Russian businessman and politician, mayor of Moscow
- Nikolai Alexandrowitsch Alexejew (activist) (* 1977), Russian lawyer, LGBT activist and publicist
- Nikolai Borissowitsch Alexejew (1912–1984), Soviet diplomat
- Nikolai Nikolajewitsch Alexejew (philosopher) (1879–1964), Russian lawyer and philosopher
- Nikolai Nikolajewitsch Alexejew (Marshal) (1914–1980), Soviet Marshal