Des Knaben Wunderhorn

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Des Knaben Wunderhorn: Alte deutsche Lieder (German; "The boy's magic horn: old German songs") is a collection of German folk poems and songs edited by Achim von Arnim and Clemens Brentano, and published in Heidelberg, Baden. The book was published in three editions: the first in 1805 followed by two more volumes in 1808.

The collection of love, soldiers, wandering, and children's songs was an important source of idealized folklore in the Romantic nationalism of the 19th century. Des Knaben Wunderhorn became widely popular across the German-speaking world; Johann Wolfgang von Goethe, one of the most influential writers of the time, declared that Des Knaben Wunderhorn "has its place in every household".