Nikolai Belyaev may refer to:
- Nikolai Belyaev (politician) (1903–1966), Soviet politician, leader of the Kazakhstan branch of Soviet Communist Party
- Nikolai Belyaev (general) [ru] (1897–1976), Soviet general during the Battle of Tolvajärvi in World War II
- Nikolai Vasilievich Belyaev (1859–1920), Russian philanthropist and entrepreneur
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