In prosody, alliterative verse is a form of verse that uses alliteration as the principal structuring device to unify lines of poetry, as opposed to other devices such as rhyme. The most commonly studied traditions of alliterative verse are those found in the oldest literature of many Germanic languages. The Old English epic Beowulf, as well as most other Old English poetry, the Old High German Muspilli, the Old Saxon Heliand, and the Old Norse Poetic Edda all use alliterative verse.

Alliterative verse can be found in many other languages as well, although rarely with the systematic rigor of Germanic forms. The Finnish Kalevala and the Estonian Kalevipoeg both use alliterative forms derived from folk tradition. Traditional Turkic verse, for example that of the Uyghur, is also alliterative.

The poetic forms found in the various Germanic languages are not identical, but there is sufficient similarity to make it clear that they are closely related traditions, stemming from a common Germanic source. Our knowledge about that common tradition, however, is based almost entirely on inference from surviving poetry.