The Junius manuscript is one of the four major codices of Old English literature. Written in the 10th century, it contains poetry dealing with Biblical subjects in Old English, the vernacular language of Anglo-Saxon England. Modern editors have determined that the manuscript is made of four poems, to which they have given the titles Genesis, Exodus, Daniel, and Christ and Satan. The identity of their author is unknown. For a long time, scholars believed them to be the work of Cædmon, accordingly calling the book the Cædmon manuscript. This theory has been discarded due to the significant differences between the poems.

The manuscript owes its current designation to the Anglo-Dutch scholar Franciscus Junius, who was the first to edit its contents and who bequeathed it to Oxford University. It is kept in the Bodleian Library under shelfmark MS Junius 11.