Tuba wagnérien en Si♭
- longName: B♭ Wagner Tuba
- shortName: B♭ Wag. Tb.
- description: B♭ Wagner Tuba
- musicXMLid: brass.wagner-tuba
- clef: F
- transposingClef: not set
- concertClef: not set
- barlineSpan: 1
- aPitchRange: 40-75
- pPitchRange: 40-79
- transposeDiatonic: -1
- transposeChromatic: -2