Alt-trombone
- longName: Alto Trombone
- shortName: A. Tbn.
- description: Alto Trombone
- musicXMLid: brass.trombone.alto
- clef: C3
- transposingClef: not set
- concertClef: not set
- barlineSpan: 1
- aPitchRange: 45-74
- pPitchRange: 45-77
- transposeDiatonic: not set
- transposeChromatic: not set