Alexander Ivanovich Vvedensky (Russian: Алекса́ндр Ива́нович Введе́нский; 6 December 1904 – 19 December 1941) was a Russian poet and dramatist with formidable influence on "unofficial" and avant-garde art during and after the times of the Soviet Union. Vvedensky is widely considered (among contemporary Russian writers and literary scholars) as one of the most original and important authors to write in Russian in the early Soviet period. Vvedensky considered his own poetry "a critique of reason more powerful than Kant's."