1900 Opera Vienna 05-04-1900
- Chronology: Year 1900
- Location: Vienna State Opera (Hofoper, Wiener Staatsoper)
- Program: Iolanthe
- Conductor: Gustav Mahler (1860-1911)
- Orchestra: Vienna State Opera Orchestra
- Stage design:
- Notes: Vienna State Opera repertoire Gustav Mahler
The 245th evening of the season.
Pyotr Tchaikovsky, Iolanthe (for the 4th time this season).
Leo Delibes (1836-1891), Sylvia (Ballet) (for the 12nd time this season). Conductor: Josef Bayer