Nikolai Leonidovich Meshcheryakov (Russian: Николай Леонидович Мещеряков; 9 March [O. S. 25 February] 1865, Ryazan Governorate –3 April 1942, Kazan) was a Russian revolutionary, Soviet historian of literature, newspaper editor and head of the Main Administration for Literary and Publishing Affairs (Glavlit) under the People's Commissariat for Education of Russian SFSR in the 1920s.
[1] Meshcheryakov's political career started off in Narodnya Volya where he learnt conspiratorial techniques, before turning to Marxism and becoming a member of the Russian Social Democratic Labour Party and later becoming aligned with its Bolshevik wing.
He was an old Sunday School friend of Nadya Krupskaya and introduced her to Social democracy and passed on his knowledge of illegal work.
In 1924 he joined Otto Schmidt in the group drawing up the outline of the Great Soviet Encyclopedia.
Meshcheryakov was a member of the Presidium of the Krestintern and served as the chief editor of the organization's magazine "The Peasant International".