Der Freischütz is a German opera with spoken dialogue in three acts by Carl Maria von Weber with a libretto by Friedrich Kind, based on a story by Johann August Apel and Friedrich Laun from their 1810 collection Gespensterbuch. It premiered on 18 June 1821 at the Schauspielhaus Berlin. It is considered the first German Romantic opera.

Carl Maria Friedrich Ernst von Weber was a German composer, conductor, virtuoso pianist, guitarist, and critic of the early Romantic period. Best known for his operas, he was a crucial figure in the development of German Romantische Oper.