The Divine Comedy is an Italian long narrative poem by Dante Alighieri, begun c. 1308 and completed in 1320, a year before his death in 1321. It is widely considered to be the preeminent work in Italian literature and one of the greatest works of world literature. The poem's imaginative vision of the afterlife is representative of the medieval world-view as it had developed in the Western Church by the 14th century. It helped establish the Tuscan language, in which it is written (also in most present-day Italian-market editions), as the standardized Italian language. It is divided into three parts: Inferno, Purgatorio, and Paradiso.

The narrative describes Dante's travels through Hell, Purgatory, and Paradise or Heaven, while allegorically the poem represents the soul's journey towards God. Dante draws on medieval Christian theology and philosophy, especially Thomistic philosophy derived from the Summa Theologica of Thomas Aquinas. Consequently, the Divine Comedy has been called "the Summa in verse". In Dante's work, Virgil is presented as human reason and Beatrice is presented as divine knowledge.