Nikolai Belyaev may refer to:
Nikolai Belyaev (politician) (1903–1966), Soviet politician, leader of the Kazakhstan branch of Soviet Communist Party (1897–1976), Soviet general during the Battle of Tolvajärvi in World War II Nikolai Vasilievich Belyaev (1859–1920), Russian philanthropist and entrepreneur Nikolaj Alekseevich Belyaev, russian astronomer , soviet boxer