Ostap Bender is a fictional con man and the central antiheroic protagonist in the novels The Twelve Chairs (1928) and The Little Golden Calf (1931) written by Soviet authors Ilya Ilf and Yevgeny Petrov. The novels belong to the picaresque novel genre, which was previously rare in Russian literature. In The Twelve Chairs he called himself Ostap-Suleyman-Berta-Maria-Bender-Bey, in The Little Golden Calf he called himself Bender-Zadunaysky, and he was called Ostap Ibragimovich by one of his companions.

The Twelve Chairs is a classic satirical picaresque novel by the Soviet authors Ilf and Petrov, published in 1928. Its plot follows characters attempting to obtain jewelry hidden in a chair. A sequel was published in 1931. The novel has been adapted to other media, primarily film.