Short novel by the Russian writer and Nobel laureate Aleksandr Solzhenitsyn, first published in November 1962 in the Soviet literary magazine Novy Mir. The story is set in a Soviet labor camp in the early 1950s and describes a single day in the life of ordinary prisoner, Ivan Denisovich Shukhov.

The book's publication was an extraordinary event in Soviet literary history, since never before had an account of Stalinist repressions been openly distributed.