Fundamentals of Marxism–Leninism is a book by a group of Soviet authors headed by Otto Wille Kuusinen.

The text draws heavily on the works of Karl Marx and Vladimir Lenin, with additional references to Friedrich Engels and Nikita Khrushchev.

The text argues that only a consistently materialist approach to philosophy can be truly scientific, since it requires the recognition of the objective existence of matter, as outside and independent of the human mind.

Part Two of the work covers Marxist theories of history, or historical materialism, by outlining the role of the mode of production, class, class struggles, the state and the individual in social development.

Part Three summarizes Marx's Das Kapital and Lenin's theory of imperialism.