On the Morning of Christ's Nativity is a nativity ode written by John Milton in 1629 and published in his Poems of Mr. John Milton (1645). The poem describes Christ's Incarnation and his overthrow of earthly and pagan powers. The poem also connects the Incarnation with Christ's Crucifixion.

Milton's 1645 Poems is a collection, divided into separate English and Latin sections, of John Milton's youthful poetry in a variety of genres, including such notable works as An Ode on the Morning of Christ's Nativity, Comus and Lycidas. Appearing in late 1645 or 1646, the octavo volume, whose full title is Poems of Mr. John Milton both English and Latin, compos'd at several times, was issued by the Royalist publisher Humphrey Moseley. In 1673, a year before his death, Milton issued a revised and expanded edition of the Poems.