| Schwarzschwanenreich | |
|---|---|
| Opera by Siegfried Wagner | |
 Hoftheater Karlsruhe, the location of the opera's premiere | |
| Translation | Realm of the Black Swan |
| Librettist | Siegfried Wagner |
| Language | German |
| Premiere | 5 November 1918 Hoftheater Karlsruhe |
Schwarzschwanenreich (Realm of the Black Swan[1]), Op. 7, is an opera in German in three acts composed by Siegfried Wagner in 1910 to his own libretto. It premiered on 5 November 1918 in Karlsruhe at the court theatre Großherzogliches Hoftheater.